Finding the Fourth Proportional to 109.72, 164.34 and 73.48

Step by Step Solution

1. Step 1: Write the proportion equation
   109.72 : 164.34 = 73.48 : x
2. Step 2: Convert to fraction form
   109.72/164.34 = 73.48/x
3. Step 3: Cross multiply
   109.72x = 164.34 × 73.48
4. Step 4: Simplify right side
   109.72x = 12,075.70
5. Step 5: Solve for x
   x = 12,075.70/109.72
6. Step 6: Final answer
   x = 110.06