Finding the Fourth Proportional to 118,918.13, 164,091.98 and 65,189.00

Step by Step Solution

1. Step 1: Write the proportion equation
   118,918.13 : 164,091.98 = 65,189.00 : x
2. Step 2: Convert to fraction form
   118,918.13/164,091.98 = 65,189.00/x
3. Step 3: Cross multiply
   118,918.13x = 164,091.98 × 65,189.00
4. Step 4: Simplify right side
   118,918.13x = 10,696,992,290.73
5. Step 5: Solve for x
   x = 10,696,992,290.73/118,918.13
6. Step 6: Final answer
   x = 89,952.58