Finding the Fourth Proportional to 118,793.40, 163,938.98 and 65,078.41

Step by Step Solution

1. Step 1: Write the proportion equation
   118,793.40 : 163,938.98 = 65,078.41 : x
2. Step 2: Convert to fraction form
   118,793.40/163,938.98 = 65,078.41/x
3. Step 3: Cross multiply
   118,793.40x = 163,938.98 × 65,078.41
4. Step 4: Simplify right side
   118,793.40x = 10,668,888,155.42
5. Step 5: Solve for x
   x = 10,668,888,155.42/118,793.40
6. Step 6: Final answer
   x = 89,810.45