Finding the Fourth Proportional to 105.51, 158.28 and 101.79

Step by Step Solution

1. Step 1: Write the proportion equation
   105.51 : 158.28 = 101.79 : x
2. Step 2: Convert to fraction form
   105.51/158.28 = 101.79/x
3. Step 3: Cross multiply
   105.51x = 158.28 × 101.79
4. Step 4: Simplify right side
   105.51x = 16,111.32
5. Step 5: Solve for x
   x = 16,111.32/105.51
6. Step 6: Final answer
   x = 152.70