Finding the Fourth Proportional to 72.94, 109.42 and 69.48

Step by Step Solution

1. Step 1: Write the proportion equation
   72.94 : 109.42 = 69.48 : x
2. Step 2: Convert to fraction form
   72.94/109.42 = 69.48/x
3. Step 3: Cross multiply
   72.94x = 109.42 × 69.48
4. Step 4: Simplify right side
   72.94x = 7,602.50
5. Step 5: Solve for x
   x = 7,602.50/72.94
6. Step 6: Final answer
   x = 104.23