Finding the Fourth Proportional to 123.37, 185.10 and 69.31

Step by Step Solution

1. Step 1: Write the proportion equation
   123.37 : 185.10 = 69.31 : x
2. Step 2: Convert to fraction form
   123.37/185.10 = 69.31/x
3. Step 3: Cross multiply
   123.37x = 185.10 × 69.31
4. Step 4: Simplify right side
   123.37x = 12,829.28
5. Step 5: Solve for x
   x = 12,829.28/123.37
6. Step 6: Final answer
   x = 103.99