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Causwell Company began 2021 with 14,000 units of inventory on hand. The cost of each unit was $4.00. During 2021 an additional 34,000 units were purchased at a single unit cost, and 24,000 units remained on hand at the end of 2021 (24,000 units therefore were sold during 2021). Causwell uses a periodic inventory system. Cost of goods sold for 2021, applying the average cost method, is $136,800. The company is interested in determining what cost of goods sold would have been if the FIFO or LIFO methods were used.

Required:
1. Determine the cost of goods sold for 2021 using the FIFO method. [Hint: Determine the cost per unit of 2021 purchases.] (Do not round intermediate calculations.)