Finding the Fourth Proportional to 72,005.24, 99,372.01 and 40,174.83

Step by Step Solution

1. Step 1: Write the proportion equation
   72,005.24 : 99,372.01 = 40,174.83 : x
2. Step 2: Convert to fraction form
   72,005.24/99,372.01 = 40,174.83/x
3. Step 3: Cross multiply
   72,005.24x = 99,372.01 × 40,174.83
4. Step 4: Simplify right side
   72,005.24x = 3,992,253,608.51
5. Step 5: Solve for x
   x = 3,992,253,608.51/72,005.24
6. Step 6: Final answer
   x = 55,443.93