Final Answer:
The avoidable interest for Vaughn Company is $272,340.
Step-by-step explanation:
Vaughn Company capitalizes interest during the construction period as part of the cost of the building. To calculate avoidable interest, we use the weighted-average interest rate on outstanding debt. The formula for avoidable interest is:

First, calculate the weighted-average interest rate:
![\[ \text{Weighted-Average Interest Rate} \\= \frac{(\text{Interest Rate} * \text{Principal}) + (\text{Interest Rate} * \text{Principal}) + (\text{Interest Rate} * \text{Principal})}{\text{Total Principal}} \]](https://img.qammunity.org/2024/formulas/business/high-school/neihthym4ze1kgnk8hf8qh4x8xr0prld57.png)
Substitute the values:
![\[ \text{Weighted-Average Interest Rate} = ((0.12 * 1,086,000) + (0.09 * 2,448,000) + (0.1 * 3,546,000))/(1,086,000 + 2,448,000 + 3,546,000) \]\[ \text{Weighted-Average Interest Rate} = (130,320 + 220,320 + 354,600)/(8,080,000) \]\[ \text{Weighted-Average Interest Rate} = (705,240)/(8,080,000) \]\[ \text{Weighted-Average Interest Rate} = 0.08725 \]](https://img.qammunity.org/2024/formulas/business/high-school/6djo1we4s13eyhg3hlsa4vxjb1nh2jvmkc.png)
Next, calculate the Weighted-Average Accumulated Expenditures:
![\[ \text{Weighted-Average Accumulated Expenditures} = ((1,968,000 * 11) + (1,248,000 * 8) + (3,046,000 * 0))/(11 + 8 + 0) \]\[ \text{Weighted-Average Accumulated Expenditures} = (21,648,000 + 9,984,000)/(19) \]\[ \text{Weighted-Average Accumulated Expenditures} = (31,632,000)/(19) \]\[ \text{Weighted-Average Accumulated Expenditures} = 1,664,842.11 \]](https://img.qammunity.org/2024/formulas/business/high-school/gh7ljjsh0t0qanfziqsb1viu36bkms1isa.png)
Now, apply these values to the avoidable interest formula:
![\[ \text{Avoidable Interest} = 0.08725 * 1,664,842.11 \]\[ \text{Avoidable Interest} = 145,034.86 \]](https://img.qammunity.org/2024/formulas/business/high-school/cm1bwqcucwdveofoadn6kz658vgf2wtydn.png)
Therefore, the avoidable interest for Vaughn Company is $145,034.86.