Finding the Fourth Proportional to 72,613.85, 108,874.15 and 28,193.27

Step by Step Solution

1. Step 1: Write the proportion equation
   72,613.85 : 108,874.15 = 28,193.27 : x
2. Step 2: Convert to fraction form
   72,613.85/108,874.15 = 28,193.27/x
3. Step 3: Cross multiply
   72,613.85x = 108,874.15 × 28,193.27
4. Step 4: Simplify right side
   72,613.85x = 3,069,517,692.12
5. Step 5: Solve for x
   x = 3,069,517,692.12/72,613.85
6. Step 6: Final answer
   x = 42,271.80