Finding the Fourth Proportional to 139,078.74, 208,563.51 and 49,102.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,078.74 : 208,563.51 = 49,102.25 : x
2. Step 2: Convert to fraction form
   139,078.74/208,563.51 = 49,102.25/x
3. Step 3: Cross multiply
   139,078.74x = 208,563.51 × 49,102.25
4. Step 4: Simplify right side
   139,078.74x = 10,240,937,608.90
5. Step 5: Solve for x
   x = 10,240,937,608.90/139,078.74
6. Step 6: Final answer
   x = 73,634.10