Finding the Fourth Proportional to 72,053.35, 99,429.49 and 40,224.27

Step by Step Solution

1. Step 1: Write the proportion equation
   72,053.35 : 99,429.49 = 40,224.27 : x
2. Step 2: Convert to fraction form
   72,053.35/99,429.49 = 40,224.27/x
3. Step 3: Cross multiply
   72,053.35x = 99,429.49 × 40,224.27
4. Step 4: Simplify right side
   72,053.35x = 3,999,478,651.72
5. Step 5: Solve for x
   x = 3,999,478,651.72/72,053.35
6. Step 6: Final answer
   x = 55,507.19