Finding the Fourth Proportional to 99.31, 136.28 and 97.83

Step by Step Solution

1. Step 1: Write the proportion equation
   99.31 : 136.28 = 97.83 : x
2. Step 2: Convert to fraction form
   99.31/136.28 = 97.83/x
3. Step 3: Cross multiply
   99.31x = 136.28 × 97.83
4. Step 4: Simplify right side
   99.31x = 13,332.27
5. Step 5: Solve for x
   x = 13,332.27/99.31
6. Step 6: Final answer
   x = 134.25