Finding the Fourth Proportional to 79.34, 109.32 and 53.42

Step by Step Solution

1. Step 1: Write the proportion equation
   79.34 : 109.32 = 53.42 : x
2. Step 2: Convert to fraction form
   79.34/109.32 = 53.42/x
3. Step 3: Cross multiply
   79.34x = 109.32 × 53.42
4. Step 4: Simplify right side
   79.34x = 5,839.87
5. Step 5: Solve for x
   x = 5,839.87/79.34
6. Step 6: Final answer
   x = 73.61