Finding the Fourth Proportional to 83.50, 125.28 and 83.50

Step by Step Solution

1. Step 1: Write the proportion equation
   83.50 : 125.28 = 83.50 : x
2. Step 2: Convert to fraction form
   83.50/125.28 = 83.50/x
3. Step 3: Cross multiply
   83.50x = 125.28 × 83.50
4. Step 4: Simplify right side
   83.50x = 10,460.57
5. Step 5: Solve for x
   x = 10,460.57/83.50
6. Step 6: Final answer
   x = 125.28