Finding the Fourth Proportional to 152,153.83, 209,901.54 and 98,456.20

Step by Step Solution

1. Step 1: Write the proportion equation
   152,153.83 : 209,901.54 = 98,456.20 : x
2. Step 2: Convert to fraction form
   152,153.83/209,901.54 = 98,456.20/x
3. Step 3: Cross multiply
   152,153.83x = 209,901.54 × 98,456.20
4. Step 4: Simplify right side
   152,153.83x = 20,666,108,002.55
5. Step 5: Solve for x
   x = 20,666,108,002.55/152,153.83
6. Step 6: Final answer
   x = 135,823.78