The aging report provides a clear picture of the accounts receivable composition. The total balance of accounts receivable outstanding at the end of the audit period is $468,880.69. As of the cutoff date, $217,113.27 of the outstanding balance is not past due. However, 17 invoices are between 90 and 120 days past due, and 13 invoices are over 120 days past due. The auditor should review past-due balances with the credit manager to obtain information for basing an opinion on their collectability.