Grouper Inc. uses a perpetual inventory system. At January 1, 2017, inventory was $210,621,200 at both cost and realizable value. At December 31, 2017, the inventory was $281,117,800 at cost and $261,495,300 at realizable value.

Prepare the necessary December 31 entry under (a) the cost-of-goods-sold method (b) Loss method.