Finding the Fourth Proportional to 116,956.31, 161,399.60 and 63,241.20

Step by Step Solution

1. Step 1: Write the proportion equation
   116,956.31 : 161,399.60 = 63,241.20 : x
2. Step 2: Convert to fraction form
   116,956.31/161,399.60 = 63,241.20/x
3. Step 3: Cross multiply
   116,956.31x = 161,399.60 × 63,241.20
4. Step 4: Simplify right side
   116,956.31x = 10,207,104,067.31
5. Step 5: Solve for x
   x = 10,207,104,067.31/116,956.31
6. Step 6: Final answer
   x = 87,272.79