Finding the Fourth Proportional to 117,116.87, 161,621.33 and 63,401.88

Step by Step Solution

1. Step 1: Write the proportion equation
   117,116.87 : 161,621.33 = 63,401.88 : x
2. Step 2: Convert to fraction form
   117,116.87/161,621.33 = 63,401.88/x
3. Step 3: Cross multiply
   117,116.87x = 161,621.33 × 63,401.88
4. Step 4: Simplify right side
   117,116.87x = 10,247,096,170.10
5. Step 5: Solve for x
   x = 10,247,096,170.10/117,116.87
6. Step 6: Final answer
   x = 87,494.62