Finding the Fourth Proportional to 118,689, 163,790.82 and 65,697

Step by Step Solution

1. Step 1: Write the proportion equation
   118,689 : 163,790.82 = 65,697 : x
2. Step 2: Convert to fraction form
   118,689/163,790.82 = 65,697/x
3. Step 3: Cross multiply
   118,689x = 163,790.82 × 65,697
4. Step 4: Simplify right side
   118,689x = 10,760,565,501.54
5. Step 5: Solve for x
   x = 10,760,565,501.54/118,689
6. Step 6: Final answer
   x = 90,661.86