Finding the Fourth Proportional to 118,843.88, 164,004.55 and 65,131.02

Step by Step Solution

1. Step 1: Write the proportion equation
   118,843.88 : 164,004.55 = 65,131.02 : x
2. Step 2: Convert to fraction form
   118,843.88/164,004.55 = 65,131.02/x
3. Step 3: Cross multiply
   118,843.88x = 164,004.55 × 65,131.02
4. Step 4: Simplify right side
   118,843.88x = 10,681,783,463.31
5. Step 5: Solve for x
   x = 10,681,783,463.31/118,843.88
6. Step 6: Final answer
   x = 89,880.81