Finding the Fourth Proportional to 89,727.32, 123,793.98 and 57,917.36

Step by Step Solution

1. Step 1: Write the proportion equation
   89,727.32 : 123,793.98 = 57,917.36 : x
2. Step 2: Convert to fraction form
   89,727.32/123,793.98 = 57,917.36/x
3. Step 3: Cross multiply
   89,727.32x = 123,793.98 × 57,917.36
4. Step 4: Simplify right side
   89,727.32x = 7,169,820,505.49
5. Step 5: Solve for x
   x = 7,169,820,505.49/89,727.32
6. Step 6: Final answer
   x = 79,906.77