Finding the Fourth Proportional to 631,627.36, 871,644.72 and 345,147.52

Step by Step Solution

1. Step 1: Write the proportion equation
   631,627.36 : 871,644.72 = 345,147.52 : x
2. Step 2: Convert to fraction form
   631,627.36/871,644.72 = 345,147.52/x
3. Step 3: Cross multiply
   631,627.36x = 871,644.72 × 345,147.52
4. Step 4: Simplify right side
   631,627.36x = 300,846,013,429.09
5. Step 5: Solve for x
   x = 300,846,013,429.09/631,627.36
6. Step 6: Final answer
   x = 476,303.01