Finding the Fourth Proportional to 116,912.56, 161,355 and 65,935.72

Step by Step Solution

1. Step 1: Write the proportion equation
   116,912.56 : 161,355 = 65,935.72 : x
2. Step 2: Convert to fraction form
   116,912.56/161,355 = 65,935.72/x
3. Step 3: Cross multiply
   116,912.56x = 161,355 × 65,935.72
4. Step 4: Simplify right side
   116,912.56x = 10,639,058,100.60
5. Step 5: Solve for x
   x = 10,639,058,100.60/116,912.56
6. Step 6: Final answer
   x = 91,000.13