Finding the Fourth Proportional to 118,910.64, 164,092.24 and 65,194.40

Step by Step Solution

1. Step 1: Write the proportion equation
   118,910.64 : 164,092.24 = 65,194.40 : x
2. Step 2: Convert to fraction form
   118,910.64/164,092.24 = 65,194.40/x
3. Step 3: Cross multiply
   118,910.64x = 164,092.24 × 65,194.40
4. Step 4: Simplify right side
   118,910.64x = 10,697,895,131.46
5. Step 5: Solve for x
   x = 10,697,895,131.46/118,910.64
6. Step 6: Final answer
   x = 89,965.84