Finding the Fourth Proportional to 626,570.08, 864,667.59 and 340,090.23

Step by Step Solution

1. Step 1: Write the proportion equation
   626,570.08 : 864,667.59 = 340,090.23 : x
2. Step 2: Convert to fraction form
   626,570.08/864,667.59 = 340,090.23/x
3. Step 3: Cross multiply
   626,570.08x = 864,667.59 × 340,090.23
4. Step 4: Simplify right side
   626,570.08x = 294,064,999,556.65
5. Step 5: Solve for x
   x = 294,064,999,556.65/626,570.08
6. Step 6: Final answer
   x = 469,324.99