Finding the Fourth Proportional to 71,789.82, 99,047.61 and 40,739.94

Step by Step Solution

1. Step 1: Write the proportion equation
   71,789.82 : 99,047.61 = 40,739.94 : x
2. Step 2: Convert to fraction form
   71,789.82/99,047.61 = 40,739.94/x
3. Step 3: Cross multiply
   71,789.82x = 99,047.61 × 40,739.94
4. Step 4: Simplify right side
   71,789.82x = 4,035,193,688.54
5. Step 5: Solve for x
   x = 4,035,193,688.54/71,789.82
6. Step 6: Final answer
   x = 56,208.44