Finding the Fourth Proportional to 71,210.71, 98,270.61 and 40,985

Step by Step Solution

1. Step 1: Write the proportion equation
   71,210.71 : 98,270.61 = 40,985 : x
2. Step 2: Convert to fraction form
   71,210.71/98,270.61 = 40,985/x
3. Step 3: Cross multiply
   71,210.71x = 98,270.61 × 40,985
4. Step 4: Simplify right side
   71,210.71x = 4,027,620,950.85
5. Step 5: Solve for x
   x = 4,027,620,950.85/71,210.71
6. Step 6: Final answer
   x = 56,559.20