Finding the Fourth Proportional to 127.79, 190.76 and 123.50

Step by Step Solution

1. Step 1: Write the proportion equation
   127.79 : 190.76 = 123.50 : x
2. Step 2: Convert to fraction form
   127.79/190.76 = 123.50/x
3. Step 3: Cross multiply
   127.79x = 190.76 × 123.50
4. Step 4: Simplify right side
   127.79x = 23,559.65
5. Step 5: Solve for x
   x = 23,559.65/127.79
6. Step 6: Final answer
   x = 184.37