Finding the Fourth Proportional to 72,689.15, 109,048.37 and 25,940.81

Step by Step Solution

1. Step 1: Write the proportion equation
   72,689.15 : 109,048.37 = 25,940.81 : x
2. Step 2: Convert to fraction form
   72,689.15/109,048.37 = 25,940.81/x
3. Step 3: Cross multiply
   72,689.15x = 109,048.37 × 25,940.81
4. Step 4: Simplify right side
   72,689.15x = 2,828,802,372.03
5. Step 5: Solve for x
   x = 2,828,802,372.03/72,689.15
6. Step 6: Final answer
   x = 38,916.43