Finding the Fourth Proportional to 152,078.48, 209,798.55 and 98,380.82

Step by Step Solution

1. Step 1: Write the proportion equation
   152,078.48 : 209,798.55 = 98,380.82 : x
2. Step 2: Convert to fraction form
   152,078.48/209,798.55 = 98,380.82/x
3. Step 3: Cross multiply
   152,078.48x = 209,798.55 × 98,380.82
4. Step 4: Simplify right side
   152,078.48x = 20,640,152,334.82
5. Step 5: Solve for x
   x = 20,640,152,334.82/152,078.48
6. Step 6: Final answer
   x = 135,720.40