Finding the Fourth Proportional to 71,063.30, 98,066.72 and 39,231.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,063.30 : 98,066.72 = 39,231.50 : x
2. Step 2: Convert to fraction form
   71,063.30/98,066.72 = 39,231.50/x
3. Step 3: Cross multiply
   71,063.30x = 98,066.72 × 39,231.50
4. Step 4: Simplify right side
   71,063.30x = 3,847,304,525.68
5. Step 5: Solve for x
   x = 3,847,304,525.68/71,063.30
6. Step 6: Final answer
   x = 54,139.12