Finding the Fourth Proportional to 116.32, 174.56 and 109.28

Step by Step Solution

1. Step 1: Write the proportion equation
   116.32 : 174.56 = 109.28 : x
2. Step 2: Convert to fraction form
   116.32/174.56 = 109.28/x
3. Step 3: Cross multiply
   116.32x = 174.56 × 109.28
4. Step 4: Simplify right side
   116.32x = 19,075.92
5. Step 5: Solve for x
   x = 19,075.92/116.32
6. Step 6: Final answer
   x = 164.00