Finding the Fourth Proportional to 109.09, 150.56 and 67.10

Step by Step Solution

1. Step 1: Write the proportion equation
   109.09 : 150.56 = 67.10 : x
2. Step 2: Convert to fraction form
   109.09/150.56 = 67.10/x
3. Step 3: Cross multiply
   109.09x = 150.56 × 67.10
4. Step 4: Simplify right side
   109.09x = 10,102.58
5. Step 5: Solve for x
   x = 10,102.58/109.09
6. Step 6: Final answer
   x = 92.61