Finding the Fourth Proportional to 131.94, 197.94 and 50.78

Step by Step Solution

1. Step 1: Write the proportion equation
   131.94 : 197.94 = 50.78 : x
2. Step 2: Convert to fraction form
   131.94/197.94 = 50.78/x
3. Step 3: Cross multiply
   131.94x = 197.94 × 50.78
4. Step 4: Simplify right side
   131.94x = 10,050.40
5. Step 5: Solve for x
   x = 10,050.40/131.94
6. Step 6: Final answer
   x = 76.17