Finding the Fourth Proportional to 105.82, 158.76 and 50.98

Step by Step Solution

1. Step 1: Write the proportion equation
   105.82 : 158.76 = 50.98 : x
2. Step 2: Convert to fraction form
   105.82/158.76 = 50.98/x
3. Step 3: Cross multiply
   105.82x = 158.76 × 50.98
4. Step 4: Simplify right side
   105.82x = 8,093.58
5. Step 5: Solve for x
   x = 8,093.58/105.82
6. Step 6: Final answer
   x = 76.48