Finding the Fourth Proportional to 102,668.86, 141,353.67 and 89,415.10

Step by Step Solution

1. Step 1: Write the proportion equation
   102,668.86 : 141,353.67 = 89,415.10 : x
2. Step 2: Convert to fraction form
   102,668.86/141,353.67 = 89,415.10/x
3. Step 3: Cross multiply
   102,668.86x = 141,353.67 × 89,415.10
4. Step 4: Simplify right side
   102,668.86x = 12,639,152,538.42
5. Step 5: Solve for x
   x = 12,639,152,538.42/102,668.86
6. Step 6: Final answer
   x = 123,106.00