Finding the Fourth Proportional to 31,066.54, 42,872.31 and 16,919.37

Step by Step Solution

1. Step 1: Write the proportion equation
   31,066.54 : 42,872.31 = 16,919.37 : x
2. Step 2: Convert to fraction form
   31,066.54/42,872.31 = 16,919.37/x
3. Step 3: Cross multiply
   31,066.54x = 42,872.31 × 16,919.37
4. Step 4: Simplify right side
   31,066.54x = 725,372,475.64
5. Step 5: Solve for x
   x = 725,372,475.64/31,066.54
6. Step 6: Final answer
   x = 23,349.00