Finding the Fourth Proportional to 63,072.65, 86,949.83 and 49,620.57

Step by Step Solution

1. Step 1: Write the proportion equation
   63,072.65 : 86,949.83 = 49,620.57 : x
2. Step 2: Convert to fraction form
   63,072.65/86,949.83 = 49,620.57/x
3. Step 3: Cross multiply
   63,072.65x = 86,949.83 × 49,620.57
4. Step 4: Simplify right side
   63,072.65x = 4,314,499,877.90
5. Step 5: Solve for x
   x = 4,314,499,877.90/63,072.65
6. Step 6: Final answer
   x = 68,405.25