Finding the Fourth Proportional to 30,446.72, 42,011.10 and 17,013.68

Step by Step Solution

1. Step 1: Write the proportion equation
   30,446.72 : 42,011.10 = 17,013.68 : x
2. Step 2: Convert to fraction form
   30,446.72/42,011.10 = 17,013.68/x
3. Step 3: Cross multiply
   30,446.72x = 42,011.10 × 17,013.68
4. Step 4: Simplify right side
   30,446.72x = 714,763,411.85
5. Step 5: Solve for x
   x = 714,763,411.85/30,446.72
6. Step 6: Final answer
   x = 23,475.88