Finding the Fourth Proportional to 71,468.57, 98,632.69 and 39,647.72

Step by Step Solution

1. Step 1: Write the proportion equation
   71,468.57 : 98,632.69 = 39,647.72 : x
2. Step 2: Convert to fraction form
   71,468.57/98,632.69 = 39,647.72/x
3. Step 3: Cross multiply
   71,468.57x = 98,632.69 × 39,647.72
4. Step 4: Simplify right side
   71,468.57x = 3,910,561,423.43
5. Step 5: Solve for x
   x = 3,910,561,423.43/71,468.57
6. Step 6: Final answer
   x = 54,717.22