Professor Hinkle's magic shop specializes in magic hats they began last year with $102,456 in inventory. During the year, they purchased 200 top hats at $45.99 each, 150 fedoras at $21.95 each, and 120 stocking hats at $18.89 each. At the end of the year, the shops inventory was valued at $87,978. What was the total cost of goods sold?