Finding the Fourth Proportional to 102,861.57, 141,886.90 and 67,936.42

Step by Step Solution

1. Step 1: Write the proportion equation
   102,861.57 : 141,886.90 = 67,936.42 : x
2. Step 2: Convert to fraction form
   102,861.57/141,886.90 = 67,936.42/x
3. Step 3: Cross multiply
   102,861.57x = 141,886.90 × 67,936.42
4. Step 4: Simplify right side
   102,861.57x = 9,639,288,030.90
5. Step 5: Solve for x
   x = 9,639,288,030.90/102,861.57
6. Step 6: Final answer
   x = 93,711.27