Finding the Fourth Proportional to 283.16, 424.71 and 100.55

Step by Step Solution

1. Step 1: Write the proportion equation
   283.16 : 424.71 = 100.55 : x
2. Step 2: Convert to fraction form
   283.16/424.71 = 100.55/x
3. Step 3: Cross multiply
   283.16x = 424.71 × 100.55
4. Step 4: Simplify right side
   283.16x = 42,704.59
5. Step 5: Solve for x
   x = 42,704.59/283.16
6. Step 6: Final answer
   x = 150.81