Finding the Fourth Proportional to 30,792.57, 42,493.73 and 16,645.42

Step by Step Solution

1. Step 1: Write the proportion equation
   30,792.57 : 42,493.73 = 16,645.42 : x
2. Step 2: Convert to fraction form
   30,792.57/42,493.73 = 16,645.42/x
3. Step 3: Cross multiply
   30,792.57x = 42,493.73 × 16,645.42
4. Step 4: Simplify right side
   30,792.57x = 707,325,687.52
5. Step 5: Solve for x
   x = 707,325,687.52/30,792.57
6. Step 6: Final answer
   x = 22,970.66