Finding the Fourth Proportional to 39,111.72, 53,981.28 and 25,659.24

Step by Step Solution

1. Step 1: Write the proportion equation
   39,111.72 : 53,981.28 = 25,659.24 : x
2. Step 2: Convert to fraction form
   39,111.72/53,981.28 = 25,659.24/x
3. Step 3: Cross multiply
   39,111.72x = 53,981.28 × 25,659.24
4. Step 4: Simplify right side
   39,111.72x = 1,385,118,619.03
5. Step 5: Solve for x
   x = 1,385,118,619.03/39,111.72
6. Step 6: Final answer
   x = 35,414.41