Finding the Fourth Proportional to 72,860.33, 109,290.69 and 20,269.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,860.33 : 109,290.69 = 20,269.82 : x
2. Step 2: Convert to fraction form
   72,860.33/109,290.69 = 20,269.82/x
3. Step 3: Cross multiply
   72,860.33x = 109,290.69 × 20,269.82
4. Step 4: Simplify right side
   72,860.33x = 2,215,302,613.98
5. Step 5: Solve for x
   x = 2,215,302,613.98/72,860.33
6. Step 6: Final answer
   x = 30,404.78