Finding the Fourth Proportional to 71,738.37, 98,998.83 and 39,906.54

Step by Step Solution

1. Step 1: Write the proportion equation
   71,738.37 : 98,998.83 = 39,906.54 : x
2. Step 2: Convert to fraction form
   71,738.37/98,998.83 = 39,906.54/x
3. Step 3: Cross multiply
   71,738.37x = 98,998.83 × 39,906.54
4. Step 4: Simplify right side
   71,738.37x = 3,950,700,769.35
5. Step 5: Solve for x
   x = 3,950,700,769.35/71,738.37
6. Step 6: Final answer
   x = 55,070.96