Finding the Fourth Proportional to 152,139.15, 209,881.30 and 98,441.48

Step by Step Solution

1. Step 1: Write the proportion equation
   152,139.15 : 209,881.30 = 98,441.48 : x
2. Step 2: Convert to fraction form
   152,139.15/209,881.30 = 98,441.48/x
3. Step 3: Cross multiply
   152,139.15x = 209,881.30 × 98,441.48
4. Step 4: Simplify right side
   152,139.15x = 20,661,025,796.32
5. Step 5: Solve for x
   x = 20,661,025,796.32/152,139.15
6. Step 6: Final answer
   x = 135,803.48