Finding the Fourth Proportional to 117,375.51, 161,978.28 and 63,660.51

Step by Step Solution

1. Step 1: Write the proportion equation
   117,375.51 : 161,978.28 = 63,660.51 : x
2. Step 2: Convert to fraction form
   117,375.51/161,978.28 = 63,660.51/x
3. Step 3: Cross multiply
   117,375.51x = 161,978.28 × 63,660.51
4. Step 4: Simplify right side
   117,375.51x = 10,311,619,913.72
5. Step 5: Solve for x
   x = 10,311,619,913.72/117,375.51
6. Step 6: Final answer
   x = 87,851.55