Finding the Fourth Proportional to 30,658.09, 42,309.41 and 17,229.31

Step by Step Solution

1. Step 1: Write the proportion equation
   30,658.09 : 42,309.41 = 17,229.31 : x
2. Step 2: Convert to fraction form
   30,658.09/42,309.41 = 17,229.31/x
3. Step 3: Cross multiply
   30,658.09x = 42,309.41 × 17,229.31
4. Step 4: Simplify right side
   30,658.09x = 728,961,940.81
5. Step 5: Solve for x
   x = 728,961,940.81/30,658.09
6. Step 6: Final answer
   x = 23,777.15