Finding the Fourth Proportional to 139,225.98, 208,838.70 and 50,479.32

Step by Step Solution

1. Step 1: Write the proportion equation
   139,225.98 : 208,838.70 = 50,479.32 : x
2. Step 2: Convert to fraction form
   139,225.98/208,838.70 = 50,479.32/x
3. Step 3: Cross multiply
   139,225.98x = 208,838.70 × 50,479.32
4. Step 4: Simplify right side
   139,225.98x = 10,542,035,565.68
5. Step 5: Solve for x
   x = 10,542,035,565.68/139,225.98
6. Step 6: Final answer
   x = 75,718.88