3) Shadwell Co. began the year with an accounts receivable balance of $108,600, and ended the year with an accounts receivable balance of $53,200. During the year, Shadwell Co. recorded $623,900 of sales on account. How much cash did Shadwell Co. collect from its customers during the year? 4) Charlie's Pillow Co. began the year with an accounts payable balance related to inventory purchases of $19,000. The balance in the account at the end of the year was $63,100. During the year, Charlie's Pillow Co. purchased $154,200 of inventory on account. How much cash did Charlie's Pillow Co. pay for inventory purchases during the year