Finding the Fourth Proportional to 152,132.20, 209,872.59 and 98,434.72

Step by Step Solution

1. Step 1: Write the proportion equation
   152,132.20 : 209,872.59 = 98,434.72 : x
2. Step 2: Convert to fraction form
   152,132.20/209,872.59 = 98,434.72/x
3. Step 3: Cross multiply
   152,132.20x = 209,872.59 × 98,434.72
4. Step 4: Simplify right side
   152,132.20x = 20,658,749,632.32
5. Step 5: Solve for x
   x = 20,658,749,632.32/152,132.20
6. Step 6: Final answer
   x = 135,794.72