Finding the Fourth Proportional to 109.32, 164.25 and 73.55

Step by Step Solution

1. Step 1: Write the proportion equation
   109.32 : 164.25 = 73.55 : x
2. Step 2: Convert to fraction form
   109.32/164.25 = 73.55/x
3. Step 3: Cross multiply
   109.32x = 164.25 × 73.55
4. Step 4: Simplify right side
   109.32x = 12,079.77
5. Step 5: Solve for x
   x = 12,079.77/109.32
6. Step 6: Final answer
   x = 110.50