Finding the Fourth Proportional to 83.94, 124.94 and 83.28

Step by Step Solution

1. Step 1: Write the proportion equation
   83.94 : 124.94 = 83.28 : x
2. Step 2: Convert to fraction form
   83.94/124.94 = 83.28/x
3. Step 3: Cross multiply
   83.94x = 124.94 × 83.28
4. Step 4: Simplify right side
   83.94x = 10,404.59
5. Step 5: Solve for x
   x = 10,404.59/83.94
6. Step 6: Final answer
   x = 123.95