Finding the Fourth Proportional to 105.88, 158.72 and 69.84

Step by Step Solution

1. Step 1: Write the proportion equation
   105.88 : 158.72 = 69.84 : x
2. Step 2: Convert to fraction form
   105.88/158.72 = 69.84/x
3. Step 3: Cross multiply
   105.88x = 158.72 × 69.84
4. Step 4: Simplify right side
   105.88x = 11,085.00
5. Step 5: Solve for x
   x = 11,085.00/105.88
6. Step 6: Final answer
   x = 104.69