Finding the Fourth Proportional to 258,132.06, 387,139.68 and 98,150.94

Step by Step Solution

1. Step 1: Write the proportion equation
   258,132.06 : 387,139.68 = 98,150.94 : x
2. Step 2: Convert to fraction form
   258,132.06/387,139.68 = 98,150.94/x
3. Step 3: Cross multiply
   258,132.06x = 387,139.68 × 98,150.94
4. Step 4: Simplify right side
   258,132.06x = 37,998,123,503.30
5. Step 5: Solve for x
   x = 37,998,123,503.30/258,132.06
6. Step 6: Final answer
   x = 147,204.20