Finding the Fourth Proportional to 72.82, 109.09 and 43.92

Step by Step Solution

1. Step 1: Write the proportion equation
   72.82 : 109.09 = 43.92 : x
2. Step 2: Convert to fraction form
   72.82/109.09 = 43.92/x
3. Step 3: Cross multiply
   72.82x = 109.09 × 43.92
4. Step 4: Simplify right side
   72.82x = 4,791.23
5. Step 5: Solve for x
   x = 4,791.23/72.82
6. Step 6: Final answer
   x = 65.79