Finding the Fourth Proportional to 123.56, 185.26 and 42.35

Step by Step Solution

1. Step 1: Write the proportion equation
   123.56 : 185.26 = 42.35 : x
2. Step 2: Convert to fraction form
   123.56/185.26 = 42.35/x
3. Step 3: Cross multiply
   123.56x = 185.26 × 42.35
4. Step 4: Simplify right side
   123.56x = 7,845.76
5. Step 5: Solve for x
   x = 7,845.76/123.56
6. Step 6: Final answer
   x = 63.50