Finding the Fourth Proportional to 118,906.10, 164,089.77 and 65,193.38

Step by Step Solution

1. Step 1: Write the proportion equation
   118,906.10 : 164,089.77 = 65,193.38 : x
2. Step 2: Convert to fraction form
   118,906.10/164,089.77 = 65,193.38/x
3. Step 3: Cross multiply
   118,906.10x = 164,089.77 × 65,193.38
4. Step 4: Simplify right side
   118,906.10x = 10,697,566,729.72
5. Step 5: Solve for x
   x = 10,697,566,729.72/118,906.10
6. Step 6: Final answer
   x = 89,966.51