Finding the Fourth Proportional to 118,917.60, 164,105.64 and 65,204.88

Step by Step Solution

1. Step 1: Write the proportion equation
   118,917.60 : 164,105.64 = 65,204.88 : x
2. Step 2: Convert to fraction form
   118,917.60/164,105.64 = 65,204.88/x
3. Step 3: Cross multiply
   118,917.60x = 164,105.64 × 65,204.88
4. Step 4: Simplify right side
   118,917.60x = 10,700,488,563.52
5. Step 5: Solve for x
   x = 10,700,488,563.52/118,917.60
6. Step 6: Final answer
   x = 89,982.38