Finding the Fourth Proportional to 132,131.52, 198,231.84 and 76,680

Step by Step Solution

1. Step 1: Write the proportion equation
   132,131.52 : 198,231.84 = 76,680 : x
2. Step 2: Convert to fraction form
   132,131.52/198,231.84 = 76,680/x
3. Step 3: Cross multiply
   132,131.52x = 198,231.84 × 76,680
4. Step 4: Simplify right side
   132,131.52x = 15,200,417,491.20
5. Step 5: Solve for x
   x = 15,200,417,491.20/132,131.52
6. Step 6: Final answer
   x = 115,040.06