Finding the Fourth Proportional to 279,411.39, 419,112.98 and 69,049.33

Step by Step Solution

1. Step 1: Write the proportion equation
   279,411.39 : 419,112.98 = 69,049.33 : x
2. Step 2: Convert to fraction form
   279,411.39/419,112.98 = 69,049.33/x
3. Step 3: Cross multiply
   279,411.39x = 419,112.98 × 69,049.33
4. Step 4: Simplify right side
   279,411.39x = 28,939,470,463.30
5. Step 5: Solve for x
   x = 28,939,470,463.30/279,411.39
6. Step 6: Final answer
   x = 103,572.98