Finding the Fourth Proportional to 72,789.29, 109,183.98 and 20,198.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,789.29 : 109,183.98 = 20,198.82 : x
2. Step 2: Convert to fraction form
   72,789.29/109,183.98 = 20,198.82/x
3. Step 3: Cross multiply
   72,789.29x = 109,183.98 × 20,198.82
4. Step 4: Simplify right side
   72,789.29x = 2,205,387,558.90
5. Step 5: Solve for x
   x = 2,205,387,558.90/72,789.29
6. Step 6: Final answer
   x = 30,298.24