On April 1, a patent with an estimated useful economic life of 12 years was acquired for $115,200. In addition, on December 31 , it was estimated that goodwill of $24,500 was impaired. b. Journalize the adjusting entry on December 31 for the amortization of the patent rights. Do not round intermediate calculations. If an amount box does not require an entry, leave it blank. Dec. 31 x x