Finding the Fourth Proportional to 116,640.33, 160,968.78 and 65,656.35

Step by Step Solution

1. Step 1: Write the proportion equation
   116,640.33 : 160,968.78 = 65,656.35 : x
2. Step 2: Convert to fraction form
   116,640.33/160,968.78 = 65,656.35/x
3. Step 3: Cross multiply
   116,640.33x = 160,968.78 × 65,656.35
4. Step 4: Simplify right side
   116,640.33x = 10,568,622,558.75
5. Step 5: Solve for x
   x = 10,568,622,558.75/116,640.33
6. Step 6: Final answer
   x = 90,608.65