Finding the Fourth Proportional to 72,855.36, 109,053.72 and 50,233.68

Step by Step Solution

1. Step 1: Write the proportion equation
   72,855.36 : 109,053.72 = 50,233.68 : x
2. Step 2: Convert to fraction form
   72,855.36/109,053.72 = 50,233.68/x
3. Step 3: Cross multiply
   72,855.36x = 109,053.72 × 50,233.68
4. Step 4: Simplify right side
   72,855.36x = 5,478,169,673.29
5. Step 5: Solve for x
   x = 5,478,169,673.29/72,855.36
6. Step 6: Final answer
   x = 75,192.40