Finding the Fourth Proportional to 118,855.95, 164,022.49 and 65,139.81

Step by Step Solution

1. Step 1: Write the proportion equation
   118,855.95 : 164,022.49 = 65,139.81 : x
2. Step 2: Convert to fraction form
   118,855.95/164,022.49 = 65,139.81/x
3. Step 3: Cross multiply
   118,855.95x = 164,022.49 × 65,139.81
4. Step 4: Simplify right side
   118,855.95x = 10,684,393,834.33
5. Step 5: Solve for x
   x = 10,684,393,834.33/118,855.95
6. Step 6: Final answer
   x = 89,893.64