Finding the Fourth Proportional to 79,621.87, 109,882.83 and 45,640.89

Step by Step Solution

1. Step 1: Write the proportion equation
   79,621.87 : 109,882.83 = 45,640.89 : x
2. Step 2: Convert to fraction form
   79,621.87/109,882.83 = 45,640.89/x
3. Step 3: Cross multiply
   79,621.87x = 109,882.83 × 45,640.89
4. Step 4: Simplify right side
   79,621.87x = 5,015,150,156.92
5. Step 5: Solve for x
   x = 5,015,150,156.92/79,621.87
6. Step 6: Final answer
   x = 62,987.09