Finding the Fourth Proportional to 109.67, 164.51 and 45.59

Step by Step Solution

1. Step 1: Write the proportion equation
   109.67 : 164.51 = 45.59 : x
2. Step 2: Convert to fraction form
   109.67/164.51 = 45.59/x
3. Step 3: Cross multiply
   109.67x = 164.51 × 45.59
4. Step 4: Simplify right side
   109.67x = 7,499.78
5. Step 5: Solve for x
   x = 7,499.78/109.67
6. Step 6: Final answer
   x = 68.39