Finding the Fourth Proportional to 31,422.72, 43,359.16 and 19,481.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,422.72 : 43,359.16 = 19,481.72 : x
2. Step 2: Convert to fraction form
   31,422.72/43,359.16 = 19,481.72/x
3. Step 3: Cross multiply
   31,422.72x = 43,359.16 × 19,481.72
4. Step 4: Simplify right side
   31,422.72x = 844,711,014.56
5. Step 5: Solve for x
   x = 844,711,014.56/31,422.72
6. Step 6: Final answer
   x = 26,882.17