Finding the Fourth Proportional to 139,287.54, 209,014.31 and 50,547.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,287.54 : 209,014.31 = 50,547.96 : x
2. Step 2: Convert to fraction form
   139,287.54/209,014.31 = 50,547.96/x
3. Step 3: Cross multiply
   139,287.54x = 209,014.31 × 50,547.96
4. Step 4: Simplify right side
   139,287.54x = 10,565,246,728.57
5. Step 5: Solve for x
   x = 10,565,246,728.57/139,287.54
6. Step 6: Final answer
   x = 75,852.06