Answer: $545,000
Explanation:
Using the indirect method of formatting the Cash flow statement, the cash from operating activity is:
= Net income + Depreciation + Loss on sale of depreciable asset + Patent amortization expense + Accounts receivable decrease + Wages payable increased - Accounts payable decrease - Prepaid assets increased - Unearned revenue decrease
= 500,000 + 53,000 + 31,000 + 5,000 + 41,000 + 19,000 - 42,000 - 31,000 - 31,000
= $545,000