Finding the Fourth Proportional to 87,016.68, 120,090.60 and 49,288.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,016.68 : 120,090.60 = 49,288.50 : x
2. Step 2: Convert to fraction form
   87,016.68/120,090.60 = 49,288.50/x
3. Step 3: Cross multiply
   87,016.68x = 120,090.60 × 49,288.50
4. Step 4: Simplify right side
   87,016.68x = 5,919,085,538.10
5. Step 5: Solve for x
   x = 5,919,085,538.10/87,016.68
6. Step 6: Final answer
   x = 68,022.42