Finding the Fourth Proportional to 131.47, 196.86 and 70.47

Step by Step Solution

1. Step 1: Write the proportion equation
   131.47 : 196.86 = 70.47 : x
2. Step 2: Convert to fraction form
   131.47/196.86 = 70.47/x
3. Step 3: Cross multiply
   131.47x = 196.86 × 70.47
4. Step 4: Simplify right side
   131.47x = 13,872.72
5. Step 5: Solve for x
   x = 13,872.72/131.47
6. Step 6: Final answer
   x = 105.52