Finding the Fourth Proportional to 116,771.83, 161,145.62 and 65,785.17

Step by Step Solution

1. Step 1: Write the proportion equation
   116,771.83 : 161,145.62 = 65,785.17 : x
2. Step 2: Convert to fraction form
   116,771.83/161,145.62 = 65,785.17/x
3. Step 3: Cross multiply
   116,771.83x = 161,145.62 × 65,785.17
4. Step 4: Simplify right side
   116,771.83x = 10,600,991,476.10
5. Step 5: Solve for x
   x = 10,600,991,476.10/116,771.83
6. Step 6: Final answer
   x = 90,783.81