Finding the Fourth Proportional to 51,648.51, 71,276.37 and 31,500.78

Step by Step Solution

1. Step 1: Write the proportion equation
   51,648.51 : 71,276.37 = 31,500.78 : x
2. Step 2: Convert to fraction form
   51,648.51/71,276.37 = 31,500.78/x
3. Step 3: Cross multiply
   51,648.51x = 71,276.37 × 31,500.78
4. Step 4: Simplify right side
   51,648.51x = 2,245,261,250.57
5. Step 5: Solve for x
   x = 2,245,261,250.57/51,648.51
6. Step 6: Final answer
   x = 43,471.95