Retained earnings, December 31, 2019 $315,450
Decrease in total liabilities during 2019 68,700
Gain on the sale of buildings during 2019 24,150
Dividends declared and paid in 2019 6,750
Proceeds from sale of common stock in 2019 74,100
Net income for the year ended December 31, 2019 33,900

Required:
From the above data, calculate the retained earnings balance as of December 31, 2018. (Enter decreases with a minus sign to indicate a negative financial statement effect.)