Finding the Fourth Proportional to 102.30, 153.42 and 65.82

Step by Step Solution

1. Step 1: Write the proportion equation
   102.30 : 153.42 = 65.82 : x
2. Step 2: Convert to fraction form
   102.30/153.42 = 65.82/x
3. Step 3: Cross multiply
   102.30x = 153.42 × 65.82
4. Step 4: Simplify right side
   102.30x = 10,098.10
5. Step 5: Solve for x
   x = 10,098.10/102.30
6. Step 6: Final answer
   x = 98.71