Finding the Fourth Proportional to 116,923.78, 161,355.25 and 65,243.05

Step by Step Solution

1. Step 1: Write the proportion equation
   116,923.78 : 161,355.25 = 65,243.05 : x
2. Step 2: Convert to fraction form
   116,923.78/161,355.25 = 65,243.05/x
3. Step 3: Cross multiply
   116,923.78x = 161,355.25 × 65,243.05
4. Step 4: Simplify right side
   116,923.78x = 10,527,309,412.80
5. Step 5: Solve for x
   x = 10,527,309,412.80/116,923.78
6. Step 6: Final answer
   x = 90,035.66