Finding the Fourth Proportional to 536,648.18, 740,412.81 and 321,709.82

Step by Step Solution

1. Step 1: Write the proportion equation
   536,648.18 : 740,412.81 = 321,709.82 : x
2. Step 2: Convert to fraction form
   536,648.18/740,412.81 = 321,709.82/x
3. Step 3: Cross multiply
   536,648.18x = 740,412.81 × 321,709.82
4. Step 4: Simplify right side
   536,648.18x = 238,198,071,830.79
5. Step 5: Solve for x
   x = 238,198,071,830.79/536,648.18
6. Step 6: Final answer
   x = 443,862.63