Finding the Fourth Proportional to 118,961.78, 164,171.86 and 65,249.06

Step by Step Solution

1. Step 1: Write the proportion equation
   118,961.78 : 164,171.86 = 65,249.06 : x
2. Step 2: Convert to fraction form
   118,961.78/164,171.86 = 65,249.06/x
3. Step 3: Cross multiply
   118,961.78x = 164,171.86 × 65,249.06
4. Step 4: Simplify right side
   118,961.78x = 10,712,059,543.45
5. Step 5: Solve for x
   x = 10,712,059,543.45/118,961.78
6. Step 6: Final answer
   x = 90,046.23