Finding the Fourth Proportional to 85,491, 117,974.07 and 49,680.72

Step by Step Solution

1. Step 1: Write the proportion equation
   85,491 : 117,974.07 = 49,680.72 : x
2. Step 2: Convert to fraction form
   85,491/117,974.07 = 49,680.72/x
3. Step 3: Cross multiply
   85,491x = 117,974.07 × 49,680.72
4. Step 4: Simplify right side
   85,491x = 5,861,036,738.93
5. Step 5: Solve for x
   x = 5,861,036,738.93/85,491
6. Step 6: Final answer
   x = 68,557.35