Finding the Fourth Proportional to 116,090.28, 160,206.39 and 65,114.33

Step by Step Solution

1. Step 1: Write the proportion equation
   116,090.28 : 160,206.39 = 65,114.33 : x
2. Step 2: Convert to fraction form
   116,090.28/160,206.39 = 65,114.33/x
3. Step 3: Cross multiply
   116,090.28x = 160,206.39 × 65,114.33
4. Step 4: Simplify right side
   116,090.28x = 10,431,730,945.54
5. Step 5: Solve for x
   x = 10,431,730,945.54/116,090.28
6. Step 6: Final answer
   x = 89,858.78