Finding the Fourth Proportional to 279,835.56, 386,161.83 and 152,508.42

Step by Step Solution

1. Step 1: Write the proportion equation
   279,835.56 : 386,161.83 = 152,508.42 : x
2. Step 2: Convert to fraction form
   279,835.56/386,161.83 = 152,508.42/x
3. Step 3: Cross multiply
   279,835.56x = 386,161.83 × 152,508.42
4. Step 4: Simplify right side
   279,835.56x = 58,892,930,557.61
5. Step 5: Solve for x
   x = 58,892,930,557.61/279,835.56
6. Step 6: Final answer
   x = 210,455.49