Finding the Fourth Proportional to 72,009.97, 99,357.85 and 41,777.78

Step by Step Solution

1. Step 1: Write the proportion equation
   72,009.97 : 99,357.85 = 41,777.78 : x
2. Step 2: Convert to fraction form
   72,009.97/99,357.85 = 41,777.78/x
3. Step 3: Cross multiply
   72,009.97x = 99,357.85 × 41,777.78
4. Step 4: Simplify right side
   72,009.97x = 4,150,950,398.57
5. Step 5: Solve for x
   x = 4,150,950,398.57/72,009.97
6. Step 6: Final answer
   x = 57,644.11