Finding the Fourth Proportional to 72,010.99, 99,374.46 and 39,747.34

Step by Step Solution

1. Step 1: Write the proportion equation
   72,010.99 : 99,374.46 = 39,747.34 : x
2. Step 2: Convert to fraction form
   72,010.99/99,374.46 = 39,747.34/x
3. Step 3: Cross multiply
   72,010.99x = 99,374.46 × 39,747.34
4. Step 4: Simplify right side
   72,010.99x = 3,949,870,448.94
5. Step 5: Solve for x
   x = 3,949,870,448.94/72,010.99
6. Step 6: Final answer
   x = 54,850.94