Finding the Fourth Proportional to 105.77, 158.37 and 73.37

Step by Step Solution

1. Step 1: Write the proportion equation
   105.77 : 158.37 = 73.37 : x
2. Step 2: Convert to fraction form
   105.77/158.37 = 73.37/x
3. Step 3: Cross multiply
   105.77x = 158.37 × 73.37
4. Step 4: Simplify right side
   105.77x = 11,618.82
5. Step 5: Solve for x
   x = 11,618.82/105.77
6. Step 6: Final answer
   x = 109.86