Finding the Fourth Proportional to 30,617.29, 42,250.49 and 17,188.30

Step by Step Solution

1. Step 1: Write the proportion equation
   30,617.29 : 42,250.49 = 17,188.30 : x
2. Step 2: Convert to fraction form
   30,617.29/42,250.49 = 17,188.30/x
3. Step 3: Cross multiply
   30,617.29x = 42,250.49 × 17,188.30
4. Step 4: Simplify right side
   30,617.29x = 726,213,886.01
5. Step 5: Solve for x
   x = 726,213,886.01/30,617.29
6. Step 6: Final answer
   x = 23,719.08