Finding the Fourth Proportional to 69.41, 103.83 and 53.12

Step by Step Solution

1. Step 1: Write the proportion equation
   69.41 : 103.83 = 53.12 : x
2. Step 2: Convert to fraction form
   69.41/103.83 = 53.12/x
3. Step 3: Cross multiply
   69.41x = 103.83 × 53.12
4. Step 4: Simplify right side
   69.41x = 5,515.45
5. Step 5: Solve for x
   x = 5,515.45/69.41
6. Step 6: Final answer
   x = 79.46