Finding the Fourth Proportional to 105.45, 158.00 and 69.27

Step by Step Solution

1. Step 1: Write the proportion equation
   105.45 : 158.00 = 69.27 : x
2. Step 2: Convert to fraction form
   105.45/158.00 = 69.27/x
3. Step 3: Cross multiply
   105.45x = 158.00 × 69.27
4. Step 4: Simplify right side
   105.45x = 10,944.31
5. Step 5: Solve for x
   x = 10,944.31/105.45
6. Step 6: Final answer
   x = 103.79