Finding the Fourth Proportional to 118,891.23, 164,069.78 and 65,176.71

Step by Step Solution

1. Step 1: Write the proportion equation
   118,891.23 : 164,069.78 = 65,176.71 : x
2. Step 2: Convert to fraction form
   118,891.23/164,069.78 = 65,176.71/x
3. Step 3: Cross multiply
   118,891.23x = 164,069.78 × 65,176.71
4. Step 4: Simplify right side
   118,891.23x = 10,693,528,144.94
5. Step 5: Solve for x
   x = 10,693,528,144.94/118,891.23
6. Step 6: Final answer
   x = 89,943.79