Finding the Fourth Proportional to 72.52, 109.39 and 68.08

Step by Step Solution

1. Step 1: Write the proportion equation
   72.52 : 109.39 = 68.08 : x
2. Step 2: Convert to fraction form
   72.52/109.39 = 68.08/x
3. Step 3: Cross multiply
   72.52x = 109.39 × 68.08
4. Step 4: Simplify right side
   72.52x = 7,447.27
5. Step 5: Solve for x
   x = 7,447.27/72.52
6. Step 6: Final answer
   x = 102.69