Finding the Fourth Proportional to 89,471.36, 123,470.88 and 49,187.72

Step by Step Solution

1. Step 1: Write the proportion equation
   89,471.36 : 123,470.88 = 49,187.72 : x
2. Step 2: Convert to fraction form
   89,471.36/123,470.88 = 49,187.72/x
3. Step 3: Cross multiply
   89,471.36x = 123,470.88 × 49,187.72
4. Step 4: Simplify right side
   89,471.36x = 6,073,251,073.59
5. Step 5: Solve for x
   x = 6,073,251,073.59/89,471.36
6. Step 6: Final answer
   x = 67,879.28