Finding the Fourth Proportional to 105.04, 144.99 and 78.82

Step by Step Solution

1. Step 1: Write the proportion equation
   105.04 : 144.99 = 78.82 : x
2. Step 2: Convert to fraction form
   105.04/144.99 = 78.82/x
3. Step 3: Cross multiply
   105.04x = 144.99 × 78.82
4. Step 4: Simplify right side
   105.04x = 11,427.39
5. Step 5: Solve for x
   x = 11,427.39/105.04
6. Step 6: Final answer
   x = 108.80