Finding the Fourth Proportional to 72,243.54, 108,387.13 and 21,644.22

Step by Step Solution

1. Step 1: Write the proportion equation
   72,243.54 : 108,387.13 = 21,644.22 : x
2. Step 2: Convert to fraction form
   72,243.54/108,387.13 = 21,644.22/x
3. Step 3: Cross multiply
   72,243.54x = 108,387.13 × 21,644.22
4. Step 4: Simplify right side
   72,243.54x = 2,345,954,886.89
5. Step 5: Solve for x
   x = 2,345,954,886.89/72,243.54
6. Step 6: Final answer
   x = 32,472.87