Finding the Fourth Proportional to 42,271.20, 63,348.48 and 31,871.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42,271.20 : 63,348.48 = 31,871.52 : x
2. Step 2: Convert to fraction form
   42,271.20/63,348.48 = 31,871.52/x
3. Step 3: Cross multiply
   42,271.20x = 63,348.48 × 31,871.52
4. Step 4: Simplify right side
   42,271.20x = 2,019,012,347.29
5. Step 5: Solve for x
   x = 2,019,012,347.29/42,271.20
6. Step 6: Final answer
   x = 47,763.31