Finding the Fourth Proportional to 71,328.50, 98,432.12 and 39,496.71

Step by Step Solution

1. Step 1: Write the proportion equation
   71,328.50 : 98,432.12 = 39,496.71 : x
2. Step 2: Convert to fraction form
   71,328.50/98,432.12 = 39,496.71/x
3. Step 3: Cross multiply
   71,328.50x = 98,432.12 × 39,496.71
4. Step 4: Simplify right side
   71,328.50x = 3,887,744,898.33
5. Step 5: Solve for x
   x = 3,887,744,898.33/71,328.50
6. Step 6: Final answer
   x = 54,504.79