Finding the Fourth Proportional to 72.86, 108.77 and 69.35

Step by Step Solution

1. Step 1: Write the proportion equation
   72.86 : 108.77 = 69.35 : x
2. Step 2: Convert to fraction form
   72.86/108.77 = 69.35/x
3. Step 3: Cross multiply
   72.86x = 108.77 × 69.35
4. Step 4: Simplify right side
   72.86x = 7,542.31
5. Step 5: Solve for x
   x = 7,542.31/72.86
6. Step 6: Final answer
   x = 103.52