Finding the Fourth Proportional to 145,174.32, 217,789.56 and 50,407.92

Step by Step Solution

1. Step 1: Write the proportion equation
   145,174.32 : 217,789.56 = 50,407.92 : x
2. Step 2: Convert to fraction form
   145,174.32/217,789.56 = 50,407.92/x
3. Step 3: Cross multiply
   145,174.32x = 217,789.56 × 50,407.92
4. Step 4: Simplify right side
   145,174.32x = 10,978,318,717.32
5. Step 5: Solve for x
   x = 10,978,318,717.32/145,174.32
6. Step 6: Final answer
   x = 75,621.63