Finding the Fourth Proportional to 72,665.70, 108,998.55 and 50,504.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,665.70 : 108,998.55 = 50,504.10 : x
2. Step 2: Convert to fraction form
   72,665.70/108,998.55 = 50,504.10/x
3. Step 3: Cross multiply
   72,665.70x = 108,998.55 × 50,504.10
4. Step 4: Simplify right side
   72,665.70x = 5,504,873,669.06
5. Step 5: Solve for x
   x = 5,504,873,669.06/72,665.70
6. Step 6: Final answer
   x = 75,756.15