Finding the Fourth Proportional to 123.50, 185.22 and 42.34

Step by Step Solution

1. Step 1: Write the proportion equation
   123.50 : 185.22 = 42.34 : x
2. Step 2: Convert to fraction form
   123.50/185.22 = 42.34/x
3. Step 3: Cross multiply
   123.50x = 185.22 × 42.34
4. Step 4: Simplify right side
   123.50x = 7,842.21
5. Step 5: Solve for x
   x = 7,842.21/123.50
6. Step 6: Final answer
   x = 63.50