Finding the Fourth Proportional to 71,502.20, 98,673.91 and 39,234.72

Step by Step Solution

1. Step 1: Write the proportion equation
   71,502.20 : 98,673.91 = 39,234.72 : x
2. Step 2: Convert to fraction form
   71,502.20/98,673.91 = 39,234.72/x
3. Step 3: Cross multiply
   71,502.20x = 98,673.91 × 39,234.72
4. Step 4: Simplify right side
   71,502.20x = 3,871,443,487.89
5. Step 5: Solve for x
   x = 3,871,443,487.89/71,502.20
6. Step 6: Final answer
   x = 54,144.40