Finding the Fourth Proportional to 71,150.76, 106,741.98 and 21,231.72

Step by Step Solution

1. Step 1: Write the proportion equation
   71,150.76 : 106,741.98 = 21,231.72 : x
2. Step 2: Convert to fraction form
   71,150.76/106,741.98 = 21,231.72/x
3. Step 3: Cross multiply
   71,150.76x = 106,741.98 × 21,231.72
4. Step 4: Simplify right side
   71,150.76x = 2,266,315,831.61
5. Step 5: Solve for x
   x = 2,266,315,831.61/71,150.76
6. Step 6: Final answer
   x = 31,852.31