Finding the Fourth Proportional to 478,118.34, 659,778.27 and 263,216.89

Step by Step Solution

1. Step 1: Write the proportion equation
   478,118.34 : 659,778.27 = 263,216.89 : x
2. Step 2: Convert to fraction form
   478,118.34/659,778.27 = 263,216.89/x
3. Step 3: Cross multiply
   478,118.34x = 659,778.27 × 263,216.89
4. Step 4: Simplify right side
   478,118.34x = 173,664,780,362.05
5. Step 5: Solve for x
   x = 173,664,780,362.05/478,118.34
6. Step 6: Final answer
   x = 363,225.52