Finding the Fourth Proportional to 42,648.21, 63,839.19 and 31,416.21

Step by Step Solution

1. Step 1: Write the proportion equation
   42,648.21 : 63,839.19 = 31,416.21 : x
2. Step 2: Convert to fraction form
   42,648.21/63,839.19 = 31,416.21/x
3. Step 3: Cross multiply
   42,648.21x = 63,839.19 × 31,416.21
4. Step 4: Simplify right side
   42,648.21x = 2,005,585,399.27
5. Step 5: Solve for x
   x = 2,005,585,399.27/42,648.21
6. Step 6: Final answer
   x = 47,026.25