Finding the Fourth Proportional to 409,142.16, 564,575.72 and 227,870.96

Step by Step Solution

1. Step 1: Write the proportion equation
   409,142.16 : 564,575.72 = 227,870.96 : x
2. Step 2: Convert to fraction form
   409,142.16/564,575.72 = 227,870.96/x
3. Step 3: Cross multiply
   409,142.16x = 564,575.72 × 227,870.96
4. Step 4: Simplify right side
   409,142.16x = 128,650,409,055.89
5. Step 5: Solve for x
   x = 128,650,409,055.89/409,142.16
6. Step 6: Final answer
   x = 314,439.38