Finding the Fourth Proportional to 131.10, 196.67 and 70.15

Step by Step Solution

1. Step 1: Write the proportion equation
   131.10 : 196.67 = 70.15 : x
2. Step 2: Convert to fraction form
   131.10/196.67 = 70.15/x
3. Step 3: Cross multiply
   131.10x = 196.67 × 70.15
4. Step 4: Simplify right side
   131.10x = 13,796.82
5. Step 5: Solve for x
   x = 13,796.82/131.10
6. Step 6: Final answer
   x = 105.24