Finding the Fourth Proportional to 131,710.56, 181,757.04 and 75,120.72

Step by Step Solution

1. Step 1: Write the proportion equation
   131,710.56 : 181,757.04 = 75,120.72 : x
2. Step 2: Convert to fraction form
   131,710.56/181,757.04 = 75,120.72/x
3. Step 3: Cross multiply
   131,710.56x = 181,757.04 × 75,120.72
4. Step 4: Simplify right side
   131,710.56x = 13,653,719,709.87
5. Step 5: Solve for x
   x = 13,653,719,709.87/131,710.56
6. Step 6: Final answer
   x = 103,664.58