Finding the Fourth Proportional to 145,168.81, 217,784.34 and 50,401.99

Step by Step Solution

1. Step 1: Write the proportion equation
   145,168.81 : 217,784.34 = 50,401.99 : x
2. Step 2: Convert to fraction form
   145,168.81/217,784.34 = 50,401.99/x
3. Step 3: Cross multiply
   145,168.81x = 217,784.34 × 50,401.99
4. Step 4: Simplify right side
   145,168.81x = 10,976,764,126.84
5. Step 5: Solve for x
   x = 10,976,764,126.84/145,168.81
6. Step 6: Final answer
   x = 75,613.79