Finding the Fourth Proportional to 105.48, 157.98 and 69.22

Step by Step Solution

1. Step 1: Write the proportion equation
   105.48 : 157.98 = 69.22 : x
2. Step 2: Convert to fraction form
   105.48/157.98 = 69.22/x
3. Step 3: Cross multiply
   105.48x = 157.98 × 69.22
4. Step 4: Simplify right side
   105.48x = 10,935.38
5. Step 5: Solve for x
   x = 10,935.38/105.48
6. Step 6: Final answer
   x = 103.67