Finding the Fourth Proportional to 155.95, 233.82 and 78.82

Step by Step Solution

1. Step 1: Write the proportion equation
   155.95 : 233.82 = 78.82 : x
2. Step 2: Convert to fraction form
   155.95/233.82 = 78.82/x
3. Step 3: Cross multiply
   155.95x = 233.82 × 78.82
4. Step 4: Simplify right side
   155.95x = 18,429.69
5. Step 5: Solve for x
   x = 18,429.69/155.95
6. Step 6: Final answer
   x = 118.18