Finding the Fourth Proportional to 57,364.92, 79,162.56 and 31,871.40

Step by Step Solution

1. Step 1: Write the proportion equation
   57,364.92 : 79,162.56 = 31,871.40 : x
2. Step 2: Convert to fraction form
   57,364.92/79,162.56 = 31,871.40/x
3. Step 3: Cross multiply
   57,364.92x = 79,162.56 × 31,871.40
4. Step 4: Simplify right side
   57,364.92x = 2,523,021,614.78
5. Step 5: Solve for x
   x = 2,523,021,614.78/57,364.92
6. Step 6: Final answer
   x = 43,981.96