Finding the Fourth Proportional to 118,896.72, 164,073.11 and 65,180.55

Step by Step Solution

1. Step 1: Write the proportion equation
   118,896.72 : 164,073.11 = 65,180.55 : x
2. Step 2: Convert to fraction form
   118,896.72/164,073.11 = 65,180.55/x
3. Step 3: Cross multiply
   118,896.72x = 164,073.11 × 65,180.55
4. Step 4: Simplify right side
   118,896.72x = 10,694,375,550.01
5. Step 5: Solve for x
   x = 10,694,375,550.01/118,896.72
6. Step 6: Final answer
   x = 89,946.77