Finding the Fourth Proportional to 99.52, 137.18 and 74.25

Step by Step Solution

1. Step 1: Write the proportion equation
   99.52 : 137.18 = 74.25 : x
2. Step 2: Convert to fraction form
   99.52/137.18 = 74.25/x
3. Step 3: Cross multiply
   99.52x = 137.18 × 74.25
4. Step 4: Simplify right side
   99.52x = 10,185.29
5. Step 5: Solve for x
   x = 10,185.29/99.52
6. Step 6: Final answer
   x = 102.34