Finding the Fourth Proportional to 131.19, 196.79 and 59.05

Step by Step Solution

1. Step 1: Write the proportion equation
   131.19 : 196.79 = 59.05 : x
2. Step 2: Convert to fraction form
   131.19/196.79 = 59.05/x
3. Step 3: Cross multiply
   131.19x = 196.79 × 59.05
4. Step 4: Simplify right side
   131.19x = 11,620.94
5. Step 5: Solve for x
   x = 11,620.94/131.19
6. Step 6: Final answer
   x = 88.58