Finding the Fourth Proportional to 116,701.89, 161,039.52 and 65,704.71

Step by Step Solution

1. Step 1: Write the proportion equation
   116,701.89 : 161,039.52 = 65,704.71 : x
2. Step 2: Convert to fraction form
   116,701.89/161,039.52 = 65,704.71/x
3. Step 3: Cross multiply
   116,701.89x = 161,039.52 × 65,704.71
4. Step 4: Simplify right side
   116,701.89x = 10,581,054,960.14
5. Step 5: Solve for x
   x = 10,581,054,960.14/116,701.89
6. Step 6: Final answer
   x = 90,667.38