Exercise 13-12A Using a T-account to determine cash flow from operating activities LO 13-1 River Co. began the accounting period with a $72,000 debit balance in its Accounts Receivable account. During the accounting period, River Co. earned revenue on account of $339,200. The ending Accounts Receivable balance was $57,600. Required Based on this information alone, determine the amount of cash inflow from operating activities during the accounting period. (Hint Use a T-account for Accounts Receivable. Enter the debits and credits for the given events, and solve for the missing amount.) Cashindow from operating activities