Finding the Fourth Proportional to 123,993.36, 171,112.68 and 67,404.78

Step by Step Solution

1. Step 1: Write the proportion equation
   123,993.36 : 171,112.68 = 67,404.78 : x
2. Step 2: Convert to fraction form
   123,993.36/171,112.68 = 67,404.78/x
3. Step 3: Cross multiply
   123,993.36x = 171,112.68 × 67,404.78
4. Step 4: Simplify right side
   123,993.36x = 11,533,812,550.61
5. Step 5: Solve for x
   x = 11,533,812,550.61/123,993.36
6. Step 6: Final answer
   x = 93,019.60