Finding the Fourth Proportional to 30,718.34, 42,389.33 and 17,289.96

Step by Step Solution

1. Step 1: Write the proportion equation
   30,718.34 : 42,389.33 = 17,289.96 : x
2. Step 2: Convert to fraction form
   30,718.34/42,389.33 = 17,289.96/x
3. Step 3: Cross multiply
   30,718.34x = 42,389.33 × 17,289.96
4. Step 4: Simplify right side
   30,718.34x = 732,909,574.72
5. Step 5: Solve for x
   x = 732,909,574.72/30,718.34
6. Step 6: Final answer
   x = 23,859.02