Finding the Fourth Proportional to 659,471.31, 910,072.01 and 357,665.31

Step by Step Solution

1. Step 1: Write the proportion equation
   659,471.31 : 910,072.01 = 357,665.31 : x
2. Step 2: Convert to fraction form
   659,471.31/910,072.01 = 357,665.31/x
3. Step 3: Cross multiply
   659,471.31x = 910,072.01 × 357,665.31
4. Step 4: Simplify right side
   659,471.31x = 325,501,185,790.65
5. Step 5: Solve for x
   x = 325,501,185,790.65/659,471.31
6. Step 6: Final answer
   x = 493,578.99