Finding the Fourth Proportional to 118,828, 163,982.72 and 65,836

Step by Step Solution

1. Step 1: Write the proportion equation
   118,828 : 163,982.72 = 65,836 : x
2. Step 2: Convert to fraction form
   118,828/163,982.72 = 65,836/x
3. Step 3: Cross multiply
   118,828x = 163,982.72 × 65,836
4. Step 4: Simplify right side
   118,828x = 10,795,966,353.92
5. Step 5: Solve for x
   x = 10,795,966,353.92/118,828
6. Step 6: Final answer
   x = 90,853.72