Finding the Fourth Proportional to 51,687.50, 71,339.86 and 31,540.06

Step by Step Solution

1. Step 1: Write the proportion equation
   51,687.50 : 71,339.86 = 31,540.06 : x
2. Step 2: Convert to fraction form
   51,687.50/71,339.86 = 31,540.06/x
3. Step 3: Cross multiply
   51,687.50x = 71,339.86 × 31,540.06
4. Step 4: Simplify right side
   51,687.50x = 2,250,063,464.79
5. Step 5: Solve for x
   x = 2,250,063,464.79/51,687.50
6. Step 6: Final answer
   x = 43,532.06