Finding the Fourth Proportional to 57,423.57, 86,105.69 and 25,806.61

Step by Step Solution

1. Step 1: Write the proportion equation
   57,423.57 : 86,105.69 = 25,806.61 : x
2. Step 2: Convert to fraction form
   57,423.57/86,105.69 = 25,806.61/x
3. Step 3: Cross multiply
   57,423.57x = 86,105.69 × 25,806.61
4. Step 4: Simplify right side
   57,423.57x = 2,222,095,401.05
5. Step 5: Solve for x
   x = 2,222,095,401.05/57,423.57
6. Step 6: Final answer
   x = 38,696.58