Finding the Fourth Proportional to 31,047.54, 46,541.25 and 12,321.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,047.54 : 46,541.25 = 12,321.42 : x
2. Step 2: Convert to fraction form
   31,047.54/46,541.25 = 12,321.42/x
3. Step 3: Cross multiply
   31,047.54x = 46,541.25 × 12,321.42
4. Step 4: Simplify right side
   31,047.54x = 573,454,288.58
5. Step 5: Solve for x
   x = 573,454,288.58/31,047.54
6. Step 6: Final answer
   x = 18,470.20