Finding the Fourth Proportional to 151.98, 209.83 and 105.34

Step by Step Solution

1. Step 1: Write the proportion equation
   151.98 : 209.83 = 105.34 : x
2. Step 2: Convert to fraction form
   151.98/209.83 = 105.34/x
3. Step 3: Cross multiply
   151.98x = 209.83 × 105.34
4. Step 4: Simplify right side
   151.98x = 22,103.49
5. Step 5: Solve for x
   x = 22,103.49/151.98
6. Step 6: Final answer
   x = 145.44