Finding the Fourth Proportional to 118,828.69, 163,981.02 and 65,112.55

Step by Step Solution

1. Step 1: Write the proportion equation
   118,828.69 : 163,981.02 = 65,112.55 : x
2. Step 2: Convert to fraction form
   118,828.69/163,981.02 = 65,112.55/x
3. Step 3: Cross multiply
   118,828.69x = 163,981.02 × 65,112.55
4. Step 4: Simplify right side
   118,828.69x = 10,677,222,363.80
5. Step 5: Solve for x
   x = 10,677,222,363.80/118,828.69
6. Step 6: Final answer
   x = 89,853.91