Finding the Fourth Proportional to 275,132.16, 412,686.72 and 88,139.52

Step by Step Solution

1. Step 1: Write the proportion equation
   275,132.16 : 412,686.72 = 88,139.52 : x
2. Step 2: Convert to fraction form
   275,132.16/412,686.72 = 88,139.52/x
3. Step 3: Cross multiply
   275,132.16x = 412,686.72 × 88,139.52
4. Step 4: Simplify right side
   275,132.16x = 36,374,009,411.17
5. Step 5: Solve for x
   x = 36,374,009,411.17/275,132.16
6. Step 6: Final answer
   x = 132,205.59