Finding the Fourth Proportional to 72.84, 108.56 and 69.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72.84 : 108.56 = 69.82 : x
2. Step 2: Convert to fraction form
   72.84/108.56 = 69.82/x
3. Step 3: Cross multiply
   72.84x = 108.56 × 69.82
4. Step 4: Simplify right side
   72.84x = 7,579.66
5. Step 5: Solve for x
   x = 7,579.66/72.84
6. Step 6: Final answer
   x = 104.06