Finding the Fourth Proportional to 30,679.74, 42,337.83 and 17,431.74

Step by Step Solution

1. Step 1: Write the proportion equation
   30,679.74 : 42,337.83 = 17,431.74 : x
2. Step 2: Convert to fraction form
   30,679.74/42,337.83 = 17,431.74/x
3. Step 3: Cross multiply
   30,679.74x = 42,337.83 × 17,431.74
4. Step 4: Simplify right side
   30,679.74x = 738,022,044.72
5. Step 5: Solve for x
   x = 738,022,044.72/30,679.74
6. Step 6: Final answer
   x = 24,055.68