Finding the Fourth Proportional to 51,904.80, 71,630.05 and 31,761.31

Step by Step Solution

1. Step 1: Write the proportion equation
   51,904.80 : 71,630.05 = 31,761.31 : x
2. Step 2: Convert to fraction form
   51,904.80/71,630.05 = 31,761.31/x
3. Step 3: Cross multiply
   51,904.80x = 71,630.05 × 31,761.31
4. Step 4: Simplify right side
   51,904.80x = 2,275,064,223.37
5. Step 5: Solve for x
   x = 2,275,064,223.37/51,904.80
6. Step 6: Final answer
   x = 43,831.48