Finding the Fourth Proportional to 30,478.28, 42,043.10 and 17,730.04

Step by Step Solution

1. Step 1: Write the proportion equation
   30,478.28 : 42,043.10 = 17,730.04 : x
2. Step 2: Convert to fraction form
   30,478.28/42,043.10 = 17,730.04/x
3. Step 3: Cross multiply
   30,478.28x = 42,043.10 × 17,730.04
4. Step 4: Simplify right side
   30,478.28x = 745,425,844.72
5. Step 5: Solve for x
   x = 745,425,844.72/30,478.28
6. Step 6: Final answer
   x = 24,457.61