Finding the Fourth Proportional to 109.89, 164.86 and 69.27

Step by Step Solution

1. Step 1: Write the proportion equation
   109.89 : 164.86 = 69.27 : x
2. Step 2: Convert to fraction form
   109.89/164.86 = 69.27/x
3. Step 3: Cross multiply
   109.89x = 164.86 × 69.27
4. Step 4: Simplify right side
   109.89x = 11,419.03
5. Step 5: Solve for x
   x = 11,419.03/109.89
6. Step 6: Final answer
   x = 103.91