Finding the Fourth Proportional to 73.34, 109.94 and 53.15

Step by Step Solution

1. Step 1: Write the proportion equation
   73.34 : 109.94 = 53.15 : x
2. Step 2: Convert to fraction form
   73.34/109.94 = 53.15/x
3. Step 3: Cross multiply
   73.34x = 109.94 × 53.15
4. Step 4: Simplify right side
   73.34x = 5,842.50
5. Step 5: Solve for x
   x = 5,842.50/73.34
6. Step 6: Final answer
   x = 79.67