Finding the Fourth Proportional to 70.52, 105.57 and 69.50

Step by Step Solution

1. Step 1: Write the proportion equation
   70.52 : 105.57 = 69.50 : x
2. Step 2: Convert to fraction form
   70.52/105.57 = 69.50/x
3. Step 3: Cross multiply
   70.52x = 105.57 × 69.50
4. Step 4: Simplify right side
   70.52x = 7,337.38
5. Step 5: Solve for x
   x = 7,337.38/70.52
6. Step 6: Final answer
   x = 104.05