Finding the Fourth Proportional to 228,564.46, 315,471.42 and 152,086.72

Step by Step Solution

1. Step 1: Write the proportion equation
   228,564.46 : 315,471.42 = 152,086.72 : x
2. Step 2: Convert to fraction form
   228,564.46/315,471.42 = 152,086.72/x
3. Step 3: Cross multiply
   228,564.46x = 315,471.42 × 152,086.72
4. Step 4: Simplify right side
   228,564.46x = 47,979,013,521.54
5. Step 5: Solve for x
   x = 47,979,013,521.54/228,564.46
6. Step 6: Final answer
   x = 209,914.58