Finding the Fourth Proportional to 91,309.29, 136,951.17 and 31,336.83

Step by Step Solution

1. Step 1: Write the proportion equation
   91,309.29 : 136,951.17 = 31,336.83 : x
2. Step 2: Convert to fraction form
   91,309.29/136,951.17 = 31,336.83/x
3. Step 3: Cross multiply
   91,309.29x = 136,951.17 × 31,336.83
4. Step 4: Simplify right side
   91,309.29x = 4,291,615,532.59
5. Step 5: Solve for x
   x = 4,291,615,532.59/91,309.29
6. Step 6: Final answer
   x = 47,000.86