Finding the Fourth Proportional to 279,847.56, 386,178.39 and 152,520.42

Step by Step Solution

1. Step 1: Write the proportion equation
   279,847.56 : 386,178.39 = 152,520.42 : x
2. Step 2: Convert to fraction form
   279,847.56/386,178.39 = 152,520.42/x
3. Step 3: Cross multiply
   279,847.56x = 386,178.39 × 152,520.42
4. Step 4: Simplify right side
   279,847.56x = 58,900,090,237.72
5. Step 5: Solve for x
   x = 58,900,090,237.72/279,847.56
6. Step 6: Final answer
   x = 210,472.05