Finding the Fourth Proportional to 40,661.59, 56,147.63 and 25,579.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,661.59 : 56,147.63 = 25,579.50 : x
2. Step 2: Convert to fraction form
   40,661.59/56,147.63 = 25,579.50/x
3. Step 3: Cross multiply
   40,661.59x = 56,147.63 × 25,579.50
4. Step 4: Simplify right side
   40,661.59x = 1,436,228,301.59
5. Step 5: Solve for x
   x = 1,436,228,301.59/40,661.59
6. Step 6: Final answer
   x = 35,321.50