Finding the Fourth Proportional to 71,066.88, 98,071.20 and 39,234.96

Step by Step Solution

1. Step 1: Write the proportion equation
   71,066.88 : 98,071.20 = 39,234.96 : x
2. Step 2: Convert to fraction form
   71,066.88/98,071.20 = 39,234.96/x
3. Step 3: Cross multiply
   71,066.88x = 98,071.20 × 39,234.96
4. Step 4: Simplify right side
   71,066.88x = 3,847,819,609.15
5. Step 5: Solve for x
   x = 3,847,819,609.15/71,066.88
6. Step 6: Final answer
   x = 54,143.64