Finding the Fourth Proportional to 152,148.79, 209,894.59 and 98,451.15

Step by Step Solution

1. Step 1: Write the proportion equation
   152,148.79 : 209,894.59 = 98,451.15 : x
2. Step 2: Convert to fraction form
   152,148.79/209,894.59 = 98,451.15/x
3. Step 3: Cross multiply
   152,148.79x = 209,894.59 × 98,451.15
4. Step 4: Simplify right side
   152,148.79x = 20,664,363,764.28
5. Step 5: Solve for x
   x = 20,664,363,764.28/152,148.79
6. Step 6: Final answer
   x = 135,816.81