Finding the Fourth Proportional to 139,844.14, 209,724.52 and 49,870.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,844.14 : 209,724.52 = 49,870.96 : x
2. Step 2: Convert to fraction form
   139,844.14/209,724.52 = 49,870.96/x
3. Step 3: Cross multiply
   139,844.14x = 209,724.52 × 49,870.96
4. Step 4: Simplify right side
   139,844.14x = 10,459,163,472.43
5. Step 5: Solve for x
   x = 10,459,163,472.43/139,844.14
6. Step 6: Final answer
   x = 74,791.57