Finding the Fourth Proportional to 57,142.44, 78,849.12 and 31,992

Step by Step Solution

1. Step 1: Write the proportion equation
   57,142.44 : 78,849.12 = 31,992 : x
2. Step 2: Convert to fraction form
   57,142.44/78,849.12 = 31,992/x
3. Step 3: Cross multiply
   57,142.44x = 78,849.12 × 31,992
4. Step 4: Simplify right side
   57,142.44x = 2,522,541,047.04
5. Step 5: Solve for x
   x = 2,522,541,047.04/57,142.44
6. Step 6: Final answer
   x = 44,144.79