Finding the Fourth Proportional to 132,581.75, 198,793.31 and 89,939.59

Step by Step Solution

1. Step 1: Write the proportion equation
   132,581.75 : 198,793.31 = 89,939.59 : x
2. Step 2: Convert to fraction form
   132,581.75/198,793.31 = 89,939.59/x
3. Step 3: Cross multiply
   132,581.75x = 198,793.31 × 89,939.59
4. Step 4: Simplify right side
   132,581.75x = 17,879,388,796.14
5. Step 5: Solve for x
   x = 17,879,388,796.14/132,581.75
6. Step 6: Final answer
   x = 134,855.58