Finding the Fourth Proportional to 102,667.86, 141,352.29 and 89,414.10

Step by Step Solution

1. Step 1: Write the proportion equation
   102,667.86 : 141,352.29 = 89,414.10 : x
2. Step 2: Convert to fraction form
   102,667.86/141,352.29 = 89,414.10/x
3. Step 3: Cross multiply
   102,667.86x = 141,352.29 × 89,414.10
4. Step 4: Simplify right side
   102,667.86x = 12,638,887,793.29
5. Step 5: Solve for x
   x = 12,638,887,793.29/102,667.86
6. Step 6: Final answer
   x = 123,104.62