Finding the Fourth Proportional to 85,456.08, 128,162.52 and 25,470.72

Step by Step Solution

1. Step 1: Write the proportion equation
   85,456.08 : 128,162.52 = 25,470.72 : x
2. Step 2: Convert to fraction form
   85,456.08/128,162.52 = 25,470.72/x
3. Step 3: Cross multiply
   85,456.08x = 128,162.52 × 25,470.72
4. Step 4: Simplify right side
   85,456.08x = 3,264,391,661.41
5. Step 5: Solve for x
   x = 3,264,391,661.41/85,456.08
6. Step 6: Final answer
   x = 38,199.64