Finding the Fourth Proportional to 215,586.50, 323,134.52 and 131,160.56

Step by Step Solution

1. Step 1: Write the proportion equation
   215,586.50 : 323,134.52 = 131,160.56 : x
2. Step 2: Convert to fraction form
   215,586.50/323,134.52 = 131,160.56/x
3. Step 3: Cross multiply
   215,586.50x = 323,134.52 × 131,160.56
4. Step 4: Simplify right side
   215,586.50x = 42,382,505,242.42
5. Step 5: Solve for x
   x = 42,382,505,242.42/215,586.50
6. Step 6: Final answer
   x = 196,591.65