Finding the Fourth Proportional to 91,429.43, 126,250.49 and 57,494.71

Step by Step Solution

1. Step 1: Write the proportion equation
   91,429.43 : 126,250.49 = 57,494.71 : x
2. Step 2: Convert to fraction form
   91,429.43/126,250.49 = 57,494.71/x
3. Step 3: Cross multiply
   91,429.43x = 126,250.49 × 57,494.71
4. Step 4: Simplify right side
   91,429.43x = 7,258,735,309.91
5. Step 5: Solve for x
   x = 7,258,735,309.91/91,429.43
6. Step 6: Final answer
   x = 79,391.67