Finding the Fourth Proportional to 99.36, 148.34 and 83.83

Step by Step Solution

1. Step 1: Write the proportion equation
   99.36 : 148.34 = 83.83 : x
2. Step 2: Convert to fraction form
   99.36/148.34 = 83.83/x
3. Step 3: Cross multiply
   99.36x = 148.34 × 83.83
4. Step 4: Simplify right side
   99.36x = 12,435.34
5. Step 5: Solve for x
   x = 12,435.34/99.36
6. Step 6: Final answer
   x = 125.15