Finding the Fourth Proportional to 101,708.72, 140,308.17 and 88,261.10

Step by Step Solution

1. Step 1: Write the proportion equation
   101,708.72 : 140,308.17 = 88,261.10 : x
2. Step 2: Convert to fraction form
   101,708.72/140,308.17 = 88,261.10/x
3. Step 3: Cross multiply
   101,708.72x = 140,308.17 × 88,261.10
4. Step 4: Simplify right side
   101,708.72x = 12,383,753,423.19
5. Step 5: Solve for x
   x = 12,383,753,423.19/101,708.72
6. Step 6: Final answer
   x = 121,757.05