Finding the Fourth Proportional to 158,479.89, 238,015.99 and 139,511.31

Step by Step Solution

1. Step 1: Write the proportion equation
   158,479.89 : 238,015.99 = 139,511.31 : x
2. Step 2: Convert to fraction form
   158,479.89/238,015.99 = 139,511.31/x
3. Step 3: Cross multiply
   158,479.89x = 238,015.99 × 139,511.31
4. Step 4: Simplify right side
   158,479.89x = 33,205,922,565.85
5. Step 5: Solve for x
   x = 33,205,922,565.85/158,479.89
6. Step 6: Final answer
   x = 209,527.67