Finding the Fourth Proportional to 72,433.36, 99,853.32 and 50,857.48

Step by Step Solution

1. Step 1: Write the proportion equation
   72,433.36 : 99,853.32 = 50,857.48 : x
2. Step 2: Convert to fraction form
   72,433.36/99,853.32 = 50,857.48/x
3. Step 3: Cross multiply
   72,433.36x = 99,853.32 × 50,857.48
4. Step 4: Simplify right side
   72,433.36x = 5,078,288,224.83
5. Step 5: Solve for x
   x = 5,078,288,224.83/72,433.36
6. Step 6: Final answer
   x = 70,109.80