Finding the Fourth Proportional to 118,906.10, 164,090.36 and 65,189.96

Step by Step Solution

1. Step 1: Write the proportion equation
   118,906.10 : 164,090.36 = 65,189.96 : x
2. Step 2: Convert to fraction form
   118,906.10/164,090.36 = 65,189.96/x
3. Step 3: Cross multiply
   118,906.10x = 164,090.36 × 65,189.96
4. Step 4: Simplify right side
   118,906.10x = 10,697,044,004.79
5. Step 5: Solve for x
   x = 10,697,044,004.79/118,906.10
6. Step 6: Final answer
   x = 89,962.11