Finding the Fourth Proportional to 72,065.22, 99,399.99 and 49,406.24

Step by Step Solution

1. Step 1: Write the proportion equation
   72,065.22 : 99,399.99 = 49,406.24 : x
2. Step 2: Convert to fraction form
   72,065.22/99,399.99 = 49,406.24/x
3. Step 3: Cross multiply
   72,065.22x = 99,399.99 × 49,406.24
4. Step 4: Simplify right side
   72,065.22x = 4,910,979,761.94
5. Step 5: Solve for x
   x = 4,910,979,761.94/72,065.22
6. Step 6: Final answer
   x = 68,146.32