Finding the Fourth Proportional to 123.51, 185.27 and 42.35

Step by Step Solution

1. Step 1: Write the proportion equation
   123.51 : 185.27 = 42.35 : x
2. Step 2: Convert to fraction form
   123.51/185.27 = 42.35/x
3. Step 3: Cross multiply
   123.51x = 185.27 × 42.35
4. Step 4: Simplify right side
   123.51x = 7,845.97
5. Step 5: Solve for x
   x = 7,845.97/123.51
6. Step 6: Final answer
   x = 63.53