Finding the Fourth Proportional to 279,993.42, 386,398.89 and 152,676

Step by Step Solution

1. Step 1: Write the proportion equation
   279,993.42 : 386,398.89 = 152,676 : x
2. Step 2: Convert to fraction form
   279,993.42/386,398.89 = 152,676/x
3. Step 3: Cross multiply
   279,993.42x = 386,398.89 × 152,676
4. Step 4: Simplify right side
   279,993.42x = 58,993,836,929.64
5. Step 5: Solve for x
   x = 58,993,836,929.64/279,993.42
6. Step 6: Final answer
   x = 210,697.23