Finding the Fourth Proportional to 90,759.43, 136,139.82 and 31,594.96

Step by Step Solution

1. Step 1: Write the proportion equation
   90,759.43 : 136,139.82 = 31,594.96 : x
2. Step 2: Convert to fraction form
   90,759.43/136,139.82 = 31,594.96/x
3. Step 3: Cross multiply
   90,759.43x = 136,139.82 × 31,594.96
4. Step 4: Simplify right side
   90,759.43x = 4,301,332,167.31
5. Step 5: Solve for x
   x = 4,301,332,167.31/90,759.43
6. Step 6: Final answer
   x = 47,392.67