Finding the Fourth Proportional to 127.83, 191.67 and 55.69

Step by Step Solution

1. Step 1: Write the proportion equation
   127.83 : 191.67 = 55.69 : x
2. Step 2: Convert to fraction form
   127.83/191.67 = 55.69/x
3. Step 3: Cross multiply
   127.83x = 191.67 × 55.69
4. Step 4: Simplify right side
   127.83x = 10,674.10
5. Step 5: Solve for x
   x = 10,674.10/127.83
6. Step 6: Final answer
   x = 83.50