Finding the Fourth Proportional to 139,498.24, 209,179.32 and 49,510.48

Step by Step Solution

1. Step 1: Write the proportion equation
   139,498.24 : 209,179.32 = 49,510.48 : x
2. Step 2: Convert to fraction form
   139,498.24/209,179.32 = 49,510.48/x
3. Step 3: Cross multiply
   139,498.24x = 209,179.32 × 49,510.48
4. Step 4: Simplify right side
   139,498.24x = 10,356,568,539.27
5. Step 5: Solve for x
   x = 10,356,568,539.27/139,498.24
6. Step 6: Final answer
   x = 74,241.57