Finding the Fourth Proportional to 73.50, 109.53 and 71.05

Step by Step Solution

1. Step 1: Write the proportion equation
   73.50 : 109.53 = 71.05 : x
2. Step 2: Convert to fraction form
   73.50/109.53 = 71.05/x
3. Step 3: Cross multiply
   73.50x = 109.53 × 71.05
4. Step 4: Simplify right side
   73.50x = 7,782.15
5. Step 5: Solve for x
   x = 7,782.15/73.50
6. Step 6: Final answer
   x = 105.88