Finding the Fourth Proportional to 123,758.91, 170,790.39 and 67,170.15

Step by Step Solution

1. Step 1: Write the proportion equation
   123,758.91 : 170,790.39 = 67,170.15 : x
2. Step 2: Convert to fraction form
   123,758.91/170,790.39 = 67,170.15/x
3. Step 3: Cross multiply
   123,758.91x = 170,790.39 × 67,170.15
4. Step 4: Simplify right side
   123,758.91x = 11,472,016,114.86
5. Step 5: Solve for x
   x = 11,472,016,114.86/123,758.91
6. Step 6: Final answer
   x = 92,696.49