Finding the Fourth Proportional to 105.80, 158.69 and 100.93

Step by Step Solution

1. Step 1: Write the proportion equation
   105.80 : 158.69 = 100.93 : x
2. Step 2: Convert to fraction form
   105.80/158.69 = 100.93/x
3. Step 3: Cross multiply
   105.80x = 158.69 × 100.93
4. Step 4: Simplify right side
   105.80x = 16,016.58
5. Step 5: Solve for x
   x = 16,016.58/105.80
6. Step 6: Final answer
   x = 151.39