Finding the Fourth Proportional to 116,986.91, 161,449.32 and 65,981.03

Step by Step Solution

1. Step 1: Write the proportion equation
   116,986.91 : 161,449.32 = 65,981.03 : x
2. Step 2: Convert to fraction form
   116,986.91/161,449.32 = 65,981.03/x
3. Step 3: Cross multiply
   116,986.91x = 161,449.32 × 65,981.03
4. Step 4: Simplify right side
   116,986.91x = 10,652,591,619.15
5. Step 5: Solve for x
   x = 10,652,591,619.15/116,986.91
6. Step 6: Final answer
   x = 91,057.98