Finding the Fourth Proportional to 123,919.46, 171,010.41 and 67,331.78

Step by Step Solution

1. Step 1: Write the proportion equation
   123,919.46 : 171,010.41 = 67,331.78 : x
2. Step 2: Convert to fraction form
   123,919.46/171,010.41 = 67,331.78/x
3. Step 3: Cross multiply
   123,919.46x = 171,010.41 × 67,331.78
4. Step 4: Simplify right side
   123,919.46x = 11,514,435,303.83
5. Step 5: Solve for x
   x = 11,514,435,303.83/123,919.46
6. Step 6: Final answer
   x = 92,918.70