Finding the Fourth Proportional to 72,053.56, 99,429.73 and 40,224.48

Step by Step Solution

1. Step 1: Write the proportion equation
   72,053.56 : 99,429.73 = 40,224.48 : x
2. Step 2: Convert to fraction form
   72,053.56/99,429.73 = 40,224.48/x
3. Step 3: Cross multiply
   72,053.56x = 99,429.73 × 40,224.48
4. Step 4: Simplify right side
   72,053.56x = 3,999,509,185.79
5. Step 5: Solve for x
   x = 3,999,509,185.79/72,053.56
6. Step 6: Final answer
   x = 55,507.45