Finding the Fourth Proportional to 30,478.45, 42,059.31 and 17,049.94

Step by Step Solution

1. Step 1: Write the proportion equation
   30,478.45 : 42,059.31 = 17,049.94 : x
2. Step 2: Convert to fraction form
   30,478.45/42,059.31 = 17,049.94/x
3. Step 3: Cross multiply
   30,478.45x = 42,059.31 × 17,049.94
4. Step 4: Simplify right side
   30,478.45x = 717,108,711.94
5. Step 5: Solve for x
   x = 717,108,711.94/30,478.45
6. Step 6: Final answer
   x = 23,528.39