Finding the Fourth Proportional to 57,179.24, 78,907.81 and 31,686.03

Step by Step Solution

1. Step 1: Write the proportion equation
   57,179.24 : 78,907.81 = 31,686.03 : x
2. Step 2: Convert to fraction form
   57,179.24/78,907.81 = 31,686.03/x
3. Step 3: Cross multiply
   57,179.24x = 78,907.81 × 31,686.03
4. Step 4: Simplify right side
   57,179.24x = 2,500,275,234.89
5. Step 5: Solve for x
   x = 2,500,275,234.89/57,179.24
6. Step 6: Final answer
   x = 43,726.98