Finding the Fourth Proportional to 110,909.28, 152,997.92 and 75,086.72

Step by Step Solution

1. Step 1: Write the proportion equation
   110,909.28 : 152,997.92 = 75,086.72 : x
2. Step 2: Convert to fraction form
   110,909.28/152,997.92 = 75,086.72/x
3. Step 3: Cross multiply
   110,909.28x = 152,997.92 × 75,086.72
4. Step 4: Simplify right side
   110,909.28x = 11,488,111,979.62
5. Step 5: Solve for x
   x = 11,488,111,979.62/110,909.28
6. Step 6: Final answer
   x = 103,581.16