Finding the Fourth Proportional to 118,921.86, 164,110.89 and 65,206.71

Step by Step Solution

1. Step 1: Write the proportion equation
   118,921.86 : 164,110.89 = 65,206.71 : x
2. Step 2: Convert to fraction form
   118,921.86/164,110.89 = 65,206.71/x
3. Step 3: Cross multiply
   118,921.86x = 164,110.89 × 65,206.71
4. Step 4: Simplify right side
   118,921.86x = 10,701,131,212.07
5. Step 5: Solve for x
   x = 10,701,131,212.07/118,921.86
6. Step 6: Final answer
   x = 89,984.56