Finding the Fourth Proportional to 42,443.20, 63,911.41 and 31,427.92

Step by Step Solution

1. Step 1: Write the proportion equation
   42,443.20 : 63,911.41 = 31,427.92 : x
2. Step 2: Convert to fraction form
   42,443.20/63,911.41 = 31,427.92/x
3. Step 3: Cross multiply
   42,443.20x = 63,911.41 × 31,427.92
4. Step 4: Simplify right side
   42,443.20x = 2,008,602,680.57
5. Step 5: Solve for x
   x = 2,008,602,680.57/42,443.20
6. Step 6: Final answer
   x = 47,324.49