Finding the Fourth Proportional to 87,019.68, 120,082.59 and 49,291.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,019.68 : 120,082.59 = 49,291.50 : x
2. Step 2: Convert to fraction form
   87,019.68/120,082.59 = 49,291.50/x
3. Step 3: Cross multiply
   87,019.68x = 120,082.59 × 49,291.50
4. Step 4: Simplify right side
   87,019.68x = 5,919,050,984.99
5. Step 5: Solve for x
   x = 5,919,050,984.99/87,019.68
6. Step 6: Final answer
   x = 68,019.68