Finding the Fourth Proportional to 118,171.48, 163,076.64 and 64,456.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,171.48 : 163,076.64 = 64,456.50 : x
2. Step 2: Convert to fraction form
   118,171.48/163,076.64 = 64,456.50/x
3. Step 3: Cross multiply
   118,171.48x = 163,076.64 × 64,456.50
4. Step 4: Simplify right side
   118,171.48x = 10,511,348,630.78
5. Step 5: Solve for x
   x = 10,511,348,630.78/118,171.48
6. Step 6: Final answer
   x = 88,949.96