Finding the Fourth Proportional to 91,500.74, 126,349.82 and 57,565.79

Step by Step Solution

1. Step 1: Write the proportion equation
   91,500.74 : 126,349.82 = 57,565.79 : x
2. Step 2: Convert to fraction form
   91,500.74/126,349.82 = 57,565.79/x
3. Step 3: Cross multiply
   91,500.74x = 126,349.82 × 57,565.79
4. Step 4: Simplify right side
   91,500.74x = 7,273,427,298.57
5. Step 5: Solve for x
   x = 7,273,427,298.57/91,500.74
6. Step 6: Final answer
   x = 79,490.37