Finding the Fourth Proportional to 116,960, 161,404.52 and 65,972.56

Step by Step Solution

1. Step 1: Write the proportion equation
   116,960 : 161,404.52 = 65,972.56 : x
2. Step 2: Convert to fraction form
   116,960/161,404.52 = 65,972.56/x
3. Step 3: Cross multiply
   116,960x = 161,404.52 × 65,972.56
4. Step 4: Simplify right side
   116,960x = 10,648,269,379.97
5. Step 5: Solve for x
   x = 10,648,269,379.97/116,960
6. Step 6: Final answer
   x = 91,041.97