Finding the Fourth Proportional to 99.02, 147.83 and 91.33

Step by Step Solution

1. Step 1: Write the proportion equation
   99.02 : 147.83 = 91.33 : x
2. Step 2: Convert to fraction form
   99.02/147.83 = 91.33/x
3. Step 3: Cross multiply
   99.02x = 147.83 × 91.33
4. Step 4: Simplify right side
   99.02x = 13,500.49
5. Step 5: Solve for x
   x = 13,500.49/99.02
6. Step 6: Final answer
   x = 136.34