Finding the Fourth Proportional to 118,844.25, 164,006.37 and 65,128.12

Step by Step Solution

1. Step 1: Write the proportion equation
   118,844.25 : 164,006.37 = 65,128.12 : x
2. Step 2: Convert to fraction form
   118,844.25/164,006.37 = 65,128.12/x
3. Step 3: Cross multiply
   118,844.25x = 164,006.37 × 65,128.12
4. Step 4: Simplify right side
   118,844.25x = 10,681,426,136.11
5. Step 5: Solve for x
   x = 10,681,426,136.11/118,844.25
6. Step 6: Final answer
   x = 89,877.52