Finding the Fourth Proportional to 83.30, 123.26 and 83.30

Step by Step Solution

1. Step 1: Write the proportion equation
   83.30 : 123.26 = 83.30 : x
2. Step 2: Convert to fraction form
   83.30/123.26 = 83.30/x
3. Step 3: Cross multiply
   83.30x = 123.26 × 83.30
4. Step 4: Simplify right side
   83.30x = 10,267.56
5. Step 5: Solve for x
   x = 10,267.56/83.30
6. Step 6: Final answer
   x = 123.26