Finding the Fourth Proportional to 30,615.12, 42,251.27 and 17,185.52

Step by Step Solution

1. Step 1: Write the proportion equation
   30,615.12 : 42,251.27 = 17,185.52 : x
2. Step 2: Convert to fraction form
   30,615.12/42,251.27 = 17,185.52/x
3. Step 3: Cross multiply
   30,615.12x = 42,251.27 × 17,185.52
4. Step 4: Simplify right side
   30,615.12x = 726,109,748.43
5. Step 5: Solve for x
   x = 726,109,748.43/30,615.12
6. Step 6: Final answer
   x = 23,717.36