Finding the Fourth Proportional to 42,717.38, 63,949.89 and 31,549.90

Step by Step Solution

1. Step 1: Write the proportion equation
   42,717.38 : 63,949.89 = 31,549.90 : x
2. Step 2: Convert to fraction form
   42,717.38/63,949.89 = 31,549.90/x
3. Step 3: Cross multiply
   42,717.38x = 63,949.89 × 31,549.90
4. Step 4: Simplify right side
   42,717.38x = 2,017,612,634.51
5. Step 5: Solve for x
   x = 2,017,612,634.51/42,717.38
6. Step 6: Final answer
   x = 47,231.66