Finding the Fourth Proportional to 109.75, 151.56 and 83.83

Step by Step Solution

1. Step 1: Write the proportion equation
   109.75 : 151.56 = 83.83 : x
2. Step 2: Convert to fraction form
   109.75/151.56 = 83.83/x
3. Step 3: Cross multiply
   109.75x = 151.56 × 83.83
4. Step 4: Simplify right side
   109.75x = 12,705.27
5. Step 5: Solve for x
   x = 12,705.27/109.75
6. Step 6: Final answer
   x = 115.77