Finding the Fourth Proportional to 30,792.32, 42,493.87 and 18,042.45

Step by Step Solution

1. Step 1: Write the proportion equation
   30,792.32 : 42,493.87 = 18,042.45 : x
2. Step 2: Convert to fraction form
   30,792.32/42,493.87 = 18,042.45/x
3. Step 3: Cross multiply
   30,792.32x = 42,493.87 × 18,042.45
4. Step 4: Simplify right side
   30,792.32x = 766,693,524.78
5. Step 5: Solve for x
   x = 766,693,524.78/30,792.32
6. Step 6: Final answer
   x = 24,898.86