Finding the Fourth Proportional to 30,449.62, 42,028.77 and 17,878.42

Step by Step Solution

1. Step 1: Write the proportion equation
   30,449.62 : 42,028.77 = 17,878.42 : x
2. Step 2: Convert to fraction form
   30,449.62/42,028.77 = 17,878.42/x
3. Step 3: Cross multiply
   30,449.62x = 42,028.77 × 17,878.42
4. Step 4: Simplify right side
   30,449.62x = 751,408,002.14
5. Step 5: Solve for x
   x = 751,408,002.14/30,449.62
6. Step 6: Final answer
   x = 24,677.09