Finding the Fourth Proportional to 123.59, 185.39 and 69.53

Step by Step Solution

1. Step 1: Write the proportion equation
   123.59 : 185.39 = 69.53 : x
2. Step 2: Convert to fraction form
   123.59/185.39 = 69.53/x
3. Step 3: Cross multiply
   123.59x = 185.39 × 69.53
4. Step 4: Simplify right side
   123.59x = 12,888.89
5. Step 5: Solve for x
   x = 12,888.89/123.59
6. Step 6: Final answer
   x = 104.29