Finding the Fourth Proportional to 30,990.42, 42,766.63 and 16,843.27

Step by Step Solution

1. Step 1: Write the proportion equation
   30,990.42 : 42,766.63 = 16,843.27 : x
2. Step 2: Convert to fraction form
   30,990.42/42,766.63 = 16,843.27/x
3. Step 3: Cross multiply
   30,990.42x = 42,766.63 × 16,843.27
4. Step 4: Simplify right side
   30,990.42x = 720,329,801.71
5. Step 5: Solve for x
   x = 720,329,801.71/30,990.42
6. Step 6: Final answer
   x = 23,243.63