Finding the Fourth Proportional to 485,766.72, 670,373.82 and 270,915.84

Step by Step Solution

1. Step 1: Write the proportion equation
   485,766.72 : 670,373.82 = 270,915.84 : x
2. Step 2: Convert to fraction form
   485,766.72/670,373.82 = 270,915.84/x
3. Step 3: Cross multiply
   485,766.72x = 670,373.82 × 270,915.84
4. Step 4: Simplify right side
   485,766.72x = 181,614,886,559.31
5. Step 5: Solve for x
   x = 181,614,886,559.31/485,766.72
6. Step 6: Final answer
   x = 373,872.64