Finding the Fourth Proportional to 102,411.09, 141,258.15 and 88,958.91

Step by Step Solution

1. Step 1: Write the proportion equation
   102,411.09 : 141,258.15 = 88,958.91 : x
2. Step 2: Convert to fraction form
   102,411.09/141,258.15 = 88,958.91/x
3. Step 3: Cross multiply
   102,411.09x = 141,258.15 × 88,958.91
4. Step 4: Simplify right side
   102,411.09x = 12,566,171,052.62
5. Step 5: Solve for x
   x = 12,566,171,052.62/102,411.09
6. Step 6: Final answer
   x = 122,703.23