Finding the Fourth Proportional to 30,456.06, 42,029.51 and 17,716.78

Step by Step Solution

1. Step 1: Write the proportion equation
   30,456.06 : 42,029.51 = 17,716.78 : x
2. Step 2: Convert to fraction form
   30,456.06/42,029.51 = 17,716.78/x
3. Step 3: Cross multiply
   30,456.06x = 42,029.51 × 17,716.78
4. Step 4: Simplify right side
   30,456.06x = 744,627,582.18
5. Step 5: Solve for x
   x = 744,627,582.18/30,456.06
6. Step 6: Final answer
   x = 24,449.24