Finding the Fourth Proportional to 30,673.91, 42,327.60 and 17,242.56

Step by Step Solution

1. Step 1: Write the proportion equation
   30,673.91 : 42,327.60 = 17,242.56 : x
2. Step 2: Convert to fraction form
   30,673.91/42,327.60 = 17,242.56/x
3. Step 3: Cross multiply
   30,673.91x = 42,327.60 × 17,242.56
4. Step 4: Simplify right side
   30,673.91x = 729,836,182.66
5. Step 5: Solve for x
   x = 729,836,182.66/30,673.91
6. Step 6: Final answer
   x = 23,793.39