Finding the Fourth Proportional to 99.82, 148.99 and 88.30

Step by Step Solution

1. Step 1: Write the proportion equation
   99.82 : 148.99 = 88.30 : x
2. Step 2: Convert to fraction form
   99.82/148.99 = 88.30/x
3. Step 3: Cross multiply
   99.82x = 148.99 × 88.30
4. Step 4: Simplify right side
   99.82x = 13,155.07
5. Step 5: Solve for x
   x = 13,155.07/99.82
6. Step 6: Final answer
   x = 131.79