Finding the Fourth Proportional to 31,044.48, 42,891.52 and 21,654.96

Step by Step Solution

1. Step 1: Write the proportion equation
   31,044.48 : 42,891.52 = 21,654.96 : x
2. Step 2: Convert to fraction form
   31,044.48/42,891.52 = 21,654.96/x
3. Step 3: Cross multiply
   31,044.48x = 42,891.52 × 21,654.96
4. Step 4: Simplify right side
   31,044.48x = 928,814,149.94
5. Step 5: Solve for x
   x = 928,814,149.94/31,044.48
6. Step 6: Final answer
   x = 29,918.82