Finding the Fourth Proportional to 31,046.24, 42,843.51 and 16,899.05

Step by Step Solution

1. Step 1: Write the proportion equation
   31,046.24 : 42,843.51 = 16,899.05 : x
2. Step 2: Convert to fraction form
   31,046.24/42,843.51 = 16,899.05/x
3. Step 3: Cross multiply
   31,046.24x = 42,843.51 × 16,899.05
4. Step 4: Simplify right side
   31,046.24x = 724,014,403.45
5. Step 5: Solve for x
   x = 724,014,403.45/31,046.24
6. Step 6: Final answer
   x = 23,320.52