Finding the Fourth Proportional to 105.56, 158.20 and 69.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105.56 : 158.20 = 69.52 : x
2. Step 2: Convert to fraction form
   105.56/158.20 = 69.52/x
3. Step 3: Cross multiply
   105.56x = 158.20 × 69.52
4. Step 4: Simplify right side
   105.56x = 10,998.06
5. Step 5: Solve for x
   x = 10,998.06/105.56
6. Step 6: Final answer
   x = 104.19