Finding the Fourth Proportional to 30,617.47, 42,251.38 and 17,189.29

Step by Step Solution

1. Step 1: Write the proportion equation
   30,617.47 : 42,251.38 = 17,189.29 : x
2. Step 2: Convert to fraction form
   30,617.47/42,251.38 = 17,189.29/x
3. Step 3: Cross multiply
   30,617.47x = 42,251.38 × 17,189.29
4. Step 4: Simplify right side
   30,617.47x = 726,271,223.72
5. Step 5: Solve for x
   x = 726,271,223.72/30,617.47
6. Step 6: Final answer
   x = 23,720.81