Finding the Fourth Proportional to 72,721.50, 109,055.25 and 25,324.43

Step by Step Solution

1. Step 1: Write the proportion equation
   72,721.50 : 109,055.25 = 25,324.43 : x
2. Step 2: Convert to fraction form
   72,721.50/109,055.25 = 25,324.43/x
3. Step 3: Cross multiply
   72,721.50x = 109,055.25 × 25,324.43
4. Step 4: Simplify right side
   72,721.50x = 2,761,761,499.48
5. Step 5: Solve for x
   x = 2,761,761,499.48/72,721.50
6. Step 6: Final answer
   x = 37,977.24