Finding the Fourth Proportional to 72,620.38, 108,864.96 and 50,444.20

Step by Step Solution

1. Step 1: Write the proportion equation
   72,620.38 : 108,864.96 = 50,444.20 : x
2. Step 2: Convert to fraction form
   72,620.38/108,864.96 = 50,444.20/x
3. Step 3: Cross multiply
   72,620.38x = 108,864.96 × 50,444.20
4. Step 4: Simplify right side
   72,620.38x = 5,491,605,815.23
5. Step 5: Solve for x
   x = 5,491,605,815.23/72,620.38
6. Step 6: Final answer
   x = 75,620.73