Finding the Fourth Proportional to 118,811.72, 163,960.06 and 65,100.08

Step by Step Solution

1. Step 1: Write the proportion equation
   118,811.72 : 163,960.06 = 65,100.08 : x
2. Step 2: Convert to fraction form
   118,811.72/163,960.06 = 65,100.08/x
3. Step 3: Cross multiply
   118,811.72x = 163,960.06 × 65,100.08
4. Step 4: Simplify right side
   118,811.72x = 10,673,813,022.80
5. Step 5: Solve for x
   x = 10,673,813,022.80/118,811.72
6. Step 6: Final answer
   x = 89,838.05