Final answer:
The total factory overhead for ABC Company is $78,000, which includes depreciation on factory equipment, the factory custodian's salary, utilities for factory facilities, and the production manager's salary.
Step-by-step explanation:
To calculate the total amount of factory overhead for ABC Company, we must consider all indirect factory-related costs. These do not include direct materials and direct labor. From the costs provided, factory overhead includes depreciation on factory equipment, the factory custodian’s salary, utilities for factory facilities, and the production manager’s salary. Adding these costs together ($12,000 + $23,000 + $9,000 + $34,000), the total factory overhead comes to $78,000.