Finding the Fourth Proportional to 139,076.74, 208,560.51 and 49,100.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,076.74 : 208,560.51 = 49,100.25 : x
2. Step 2: Convert to fraction form
   139,076.74/208,560.51 = 49,100.25/x
3. Step 3: Cross multiply
   139,076.74x = 208,560.51 × 49,100.25
4. Step 4: Simplify right side
   139,076.74x = 10,240,372,583.15
5. Step 5: Solve for x
   x = 10,240,372,583.15/139,076.74
6. Step 6: Final answer
   x = 73,631.10