Finding the Fourth Proportional to 118,996.77, 164,216.79 and 65,280.41

Step by Step Solution

1. Step 1: Write the proportion equation
   118,996.77 : 164,216.79 = 65,280.41 : x
2. Step 2: Convert to fraction form
   118,996.77/164,216.79 = 65,280.41/x
3. Step 3: Cross multiply
   118,996.77x = 164,216.79 × 65,280.41
4. Step 4: Simplify right side
   118,996.77x = 10,720,138,559.00
5. Step 5: Solve for x
   x = 10,720,138,559.00/118,996.77
6. Step 6: Final answer
   x = 90,087.64