Finding the Fourth Proportional to 131.56, 181.61 and 98.82

Step by Step Solution

1. Step 1: Write the proportion equation
   131.56 : 181.61 = 98.82 : x
2. Step 2: Convert to fraction form
   131.56/181.61 = 98.82/x
3. Step 3: Cross multiply
   131.56x = 181.61 × 98.82
4. Step 4: Simplify right side
   131.56x = 17,946.58
5. Step 5: Solve for x
   x = 17,946.58/131.56
6. Step 6: Final answer
   x = 136.42