Finding the Fourth Proportional to 90,761.43, 136,142.82 and 31,596.96

Step by Step Solution

1. Step 1: Write the proportion equation
   90,761.43 : 136,142.82 = 31,596.96 : x
2. Step 2: Convert to fraction form
   90,761.43/136,142.82 = 31,596.96/x
3. Step 3: Cross multiply
   90,761.43x = 136,142.82 × 31,596.96
4. Step 4: Simplify right side
   90,761.43x = 4,301,699,237.83
5. Step 5: Solve for x
   x = 4,301,699,237.83/90,761.43
6. Step 6: Final answer
   x = 47,395.67