Finding the Fourth Proportional to 86,610.89, 129,920.00 and 27,445.25

Step by Step Solution

1. Step 1: Write the proportion equation
   86,610.89 : 129,920.00 = 27,445.25 : x
2. Step 2: Convert to fraction form
   86,610.89/129,920.00 = 27,445.25/x
3. Step 3: Cross multiply
   86,610.89x = 129,920.00 × 27,445.25
4. Step 4: Simplify right side
   86,610.89x = 3,565,687,067.57
5. Step 5: Solve for x
   x = 3,565,687,067.57/86,610.89
6. Step 6: Final answer
   x = 41,169.04