Finding the Fourth Proportional to 57,515.12, 86,147.98 and 27,870.83

Step by Step Solution

1. Step 1: Write the proportion equation
   57,515.12 : 86,147.98 = 27,870.83 : x
2. Step 2: Convert to fraction form
   57,515.12/86,147.98 = 27,870.83/x
3. Step 3: Cross multiply
   57,515.12x = 86,147.98 × 27,870.83
4. Step 4: Simplify right side
   57,515.12x = 2,401,015,205.01
5. Step 5: Solve for x
   x = 2,401,015,205.01/57,515.12
6. Step 6: Final answer
   x = 41,745.81