Finding the Fourth Proportional to 152,078.42, 209,798.46 and 98,380.76

Step by Step Solution

1. Step 1: Write the proportion equation
   152,078.42 : 209,798.46 = 98,380.76 : x
2. Step 2: Convert to fraction form
   152,078.42/209,798.46 = 98,380.76/x
3. Step 3: Cross multiply
   152,078.42x = 209,798.46 × 98,380.76
4. Step 4: Simplify right side
   152,078.42x = 20,640,130,892.64
5. Step 5: Solve for x
   x = 20,640,130,892.64/152,078.42
6. Step 6: Final answer
   x = 135,720.31