Finding the Fourth Proportional to 109.98, 164.77 and 69.42

Step by Step Solution

1. Step 1: Write the proportion equation
   109.98 : 164.77 = 69.42 : x
2. Step 2: Convert to fraction form
   109.98/164.77 = 69.42/x
3. Step 3: Cross multiply
   109.98x = 164.77 × 69.42
4. Step 4: Simplify right side
   109.98x = 11,438.33
5. Step 5: Solve for x
   x = 11,438.33/109.98
6. Step 6: Final answer
   x = 104.00