Finding the Fourth Proportional to 57,422.78, 79,243.50 and 31,928.87

Step by Step Solution

1. Step 1: Write the proportion equation
   57,422.78 : 79,243.50 = 31,928.87 : x
2. Step 2: Convert to fraction form
   57,422.78/79,243.50 = 31,928.87/x
3. Step 3: Cross multiply
   57,422.78x = 79,243.50 × 31,928.87
4. Step 4: Simplify right side
   57,422.78x = 2,530,155,013.63
5. Step 5: Solve for x
   x = 2,530,155,013.63/57,422.78
6. Step 6: Final answer
   x = 44,061.87