Finding the Fourth Proportional to 71,395.62, 98,527.22 and 39,128.10

Step by Step Solution

1. Step 1: Write the proportion equation
   71,395.62 : 98,527.22 = 39,128.10 : x
2. Step 2: Convert to fraction form
   71,395.62/98,527.22 = 39,128.10/x
3. Step 3: Cross multiply
   71,395.62x = 98,527.22 × 39,128.10
4. Step 4: Simplify right side
   71,395.62x = 3,855,182,498.49
5. Step 5: Solve for x
   x = 3,855,182,498.49/71,395.62
6. Step 6: Final answer
   x = 53,997.47