Finding the Fourth Proportional to 185.31, 255.83 and 130.10

Step by Step Solution

1. Step 1: Write the proportion equation
   185.31 : 255.83 = 130.10 : x
2. Step 2: Convert to fraction form
   185.31/255.83 = 130.10/x
3. Step 3: Cross multiply
   185.31x = 255.83 × 130.10
4. Step 4: Simplify right side
   185.31x = 33,281.55
5. Step 5: Solve for x
   x = 33,281.55/185.31
6. Step 6: Final answer
   x = 179.60