Finding the Fourth Proportional to 88.76, 123.22 and 83.30

Step by Step Solution

1. Step 1: Write the proportion equation
   88.76 : 123.22 = 83.30 : x
2. Step 2: Convert to fraction form
   88.76/123.22 = 83.30/x
3. Step 3: Cross multiply
   88.76x = 123.22 × 83.30
4. Step 4: Simplify right side
   88.76x = 10,263.71
5. Step 5: Solve for x
   x = 10,263.71/88.76
6. Step 6: Final answer
   x = 115.63