Finding the Fourth Proportional to 116,920.50, 161,366.09 and 65,943.69

Step by Step Solution

1. Step 1: Write the proportion equation
   116,920.50 : 161,366.09 = 65,943.69 : x
2. Step 2: Convert to fraction form
   116,920.50/161,366.09 = 65,943.69/x
3. Step 3: Cross multiply
   116,920.50x = 161,366.09 × 65,943.69
4. Step 4: Simplify right side
   116,920.50x = 10,641,075,085.75
5. Step 5: Solve for x
   x = 10,641,075,085.75/116,920.50
6. Step 6: Final answer
   x = 91,011.20