Finding the Fourth Proportional to 72.09, 107.73 and 52.83

Step by Step Solution

1. Step 1: Write the proportion equation
   72.09 : 107.73 = 52.83 : x
2. Step 2: Convert to fraction form
   72.09/107.73 = 52.83/x
3. Step 3: Cross multiply
   72.09x = 107.73 × 52.83
4. Step 4: Simplify right side
   72.09x = 5,691.38
5. Step 5: Solve for x
   x = 5,691.38/72.09
6. Step 6: Final answer
   x = 78.95