Finding the Fourth Proportional to 131.15, 196.80 and 50.00

Step by Step Solution

1. Step 1: Write the proportion equation
   131.15 : 196.80 = 50.00 : x
2. Step 2: Convert to fraction form
   131.15/196.80 = 50.00/x
3. Step 3: Cross multiply
   131.15x = 196.80 × 50.00
4. Step 4: Simplify right side
   131.15x = 9,839.02
5. Step 5: Solve for x
   x = 9,839.02/131.15
6. Step 6: Final answer
   x = 75.02