Final answer:
Ron will recognize a gain of $90,000 as he reinvested $240,000 of the $300,000 insurance proceeds in another building, leaving $60,000 of proceeds not reinvested, which is considered as the recognized gain.
Step-by-step explanation:
Ron will recognize a gain of $90,000. Although he received $300,000 from the insurance, which is more than the adjusted basis of the property ($210,000), the recognized gain is deferred because he reinvested $240,000 in a replacement property.
The recognized gain is calculated by subtracting the adjusted basis from the amount of reimbursement not reinvested in a similar property. In this case, the recognized gain is the unreinvested $60,000 ($300,000 insurance proceeds − $240,000 reinvested).