Finding the Fourth Proportional to 72,646.44, 108,903.90 and 50,470.20

Step by Step Solution

1. Step 1: Write the proportion equation
   72,646.44 : 108,903.90 = 50,470.20 : x
2. Step 2: Convert to fraction form
   72,646.44/108,903.90 = 50,470.20/x
3. Step 3: Cross multiply
   72,646.44x = 108,903.90 × 50,470.20
4. Step 4: Simplify right side
   72,646.44x = 5,496,401,613.78
5. Step 5: Solve for x
   x = 5,496,401,613.78/72,646.44
6. Step 6: Final answer
   x = 75,659.61