Finding the Fourth Proportional to 105.59, 158.27 and 67.07

Step by Step Solution

1. Step 1: Write the proportion equation
   105.59 : 158.27 = 67.07 : x
2. Step 2: Convert to fraction form
   105.59/158.27 = 67.07/x
3. Step 3: Cross multiply
   105.59x = 158.27 × 67.07
4. Step 4: Simplify right side
   105.59x = 10,614.04
5. Step 5: Solve for x
   x = 10,614.04/105.59
6. Step 6: Final answer
   x = 100.53