Finding the Fourth Proportional to 631,056.72, 870,853.72 and 344,576.56

Step by Step Solution

1. Step 1: Write the proportion equation
   631,056.72 : 870,853.72 = 344,576.56 : x
2. Step 2: Convert to fraction form
   631,056.72/870,853.72 = 344,576.56/x
3. Step 3: Cross multiply
   631,056.72x = 870,853.72 × 344,576.56
4. Step 4: Simplify right side
   631,056.72x = 300,075,779,100.80
5. Step 5: Solve for x
   x = 300,075,779,100.80/631,056.72
6. Step 6: Final answer
   x = 475,513.17