Finding the Fourth Proportional to 30,791.57, 42,492.35 and 16,644.42

Step by Step Solution

1. Step 1: Write the proportion equation
   30,791.57 : 42,492.35 = 16,644.42 : x
2. Step 2: Convert to fraction form
   30,791.57/42,492.35 = 16,644.42/x
3. Step 3: Cross multiply
   30,791.57x = 42,492.35 × 16,644.42
4. Step 4: Simplify right side
   30,791.57x = 707,260,224.50
5. Step 5: Solve for x
   x = 707,260,224.50/30,791.57
6. Step 6: Final answer
   x = 22,969.28