January 1, 2017 2017 December 31, 2017 Raw materials inventory $24.630 $32,120 Work in process inventory 17,070 18,650 29,770 22,440 Finished goods inventory Materials purchased $154,230 Direct labor 223.580 Manufacturing overhead 183.680 901,360 Sales revenue Compute cost of goods manufactured. Sheffield Company Cost of Goods Manufactured Schedule Raw Materials Inventory, 12/31