Finding the Fourth Proportional to 71,142.48, 98,176.59 and 39,311.10

Step by Step Solution

1. Step 1: Write the proportion equation
   71,142.48 : 98,176.59 = 39,311.10 : x
2. Step 2: Convert to fraction form
   71,142.48/98,176.59 = 39,311.10/x
3. Step 3: Cross multiply
   71,142.48x = 98,176.59 × 39,311.10
4. Step 4: Simplify right side
   71,142.48x = 3,859,429,747.15
5. Step 5: Solve for x
   x = 3,859,429,747.15/71,142.48
6. Step 6: Final answer
   x = 54,249.30