Finding the Fourth Proportional to 117,375.69, 161,978.49 and 63,660.49

Step by Step Solution

1. Step 1: Write the proportion equation
   117,375.69 : 161,978.49 = 63,660.49 : x
2. Step 2: Convert to fraction form
   117,375.69/161,978.49 = 63,660.49/x
3. Step 3: Cross multiply
   117,375.69x = 161,978.49 × 63,660.49
4. Step 4: Simplify right side
   117,375.69x = 10,311,630,042.86
5. Step 5: Solve for x
   x = 10,311,630,042.86/117,375.69
6. Step 6: Final answer
   x = 87,851.50