Finding the Fourth Proportional to 72.98, 108.69 and 69.47

Step by Step Solution

1. Step 1: Write the proportion equation
   72.98 : 108.69 = 69.47 : x
2. Step 2: Convert to fraction form
   72.98/108.69 = 69.47/x
3. Step 3: Cross multiply
   72.98x = 108.69 × 69.47
4. Step 4: Simplify right side
   72.98x = 7,550.15
5. Step 5: Solve for x
   x = 7,550.15/72.98
6. Step 6: Final answer
   x = 103.46