The balance on Feb 1 was $44,100. Find by solving for x, the account balance on Feb 1, knowing that $59,900 was the balance on Feb 28. Find by adding $201,400 of purchases and subtracting $186,500 paid to creditors:
x + 201,400 - 186,500 = 59,000.
x + 201,400 = 245,500
x = 44,100