Finding the Fourth Proportional to 265,535.10, 398,061.72 and 132,456.18

Step by Step Solution

1. Step 1: Write the proportion equation
   265,535.10 : 398,061.72 = 132,456.18 : x
2. Step 2: Convert to fraction form
   265,535.10/398,061.72 = 132,456.18/x
3. Step 3: Cross multiply
   265,535.10x = 398,061.72 × 132,456.18
4. Step 4: Simplify right side
   265,535.10x = 52,725,734,835.43
5. Step 5: Solve for x
   x = 52,725,734,835.43/265,535.10
6. Step 6: Final answer
   x = 198,564.09