Finding the Fourth Proportional to 99.25, 147.88 and 88.47

Step by Step Solution

1. Step 1: Write the proportion equation
   99.25 : 147.88 = 88.47 : x
2. Step 2: Convert to fraction form
   99.25/147.88 = 88.47/x
3. Step 3: Cross multiply
   99.25x = 147.88 × 88.47
4. Step 4: Simplify right side
   99.25x = 13,082.50
5. Step 5: Solve for x
   x = 13,082.50/99.25
6. Step 6: Final answer
   x = 131.82