Finding the Fourth Proportional to 116,680.96, 161,016 and 65,696.32

Step by Step Solution

1. Step 1: Write the proportion equation
   116,680.96 : 161,016 = 65,696.32 : x
2. Step 2: Convert to fraction form
   116,680.96/161,016 = 65,696.32/x
3. Step 3: Cross multiply
   116,680.96x = 161,016 × 65,696.32
4. Step 4: Simplify right side
   116,680.96x = 10,578,158,661.12
5. Step 5: Solve for x
   x = 10,578,158,661.12/116,680.96
6. Step 6: Final answer
   x = 90,658.82