Finding the Fourth Proportional to 118,865.16, 164,033.94 and 65,150.40

Step by Step Solution

1. Step 1: Write the proportion equation
   118,865.16 : 164,033.94 = 65,150.40 : x
2. Step 2: Convert to fraction form
   118,865.16/164,033.94 = 65,150.40/x
3. Step 3: Cross multiply
   118,865.16x = 164,033.94 × 65,150.40
4. Step 4: Simplify right side
   118,865.16x = 10,686,876,804.58
5. Step 5: Solve for x
   x = 10,686,876,804.58/118,865.16
6. Step 6: Final answer
   x = 89,907.56