Finding the Fourth Proportional to 116,659.78, 160,993.56 and 65,674.38

Step by Step Solution

1. Step 1: Write the proportion equation
   116,659.78 : 160,993.56 = 65,674.38 : x
2. Step 2: Convert to fraction form
   116,659.78/160,993.56 = 65,674.38/x
3. Step 3: Cross multiply
   116,659.78x = 160,993.56 × 65,674.38
4. Step 4: Simplify right side
   116,659.78x = 10,573,152,768.25
5. Step 5: Solve for x
   x = 10,573,152,768.25/116,659.78
6. Step 6: Final answer
   x = 90,632.37