Finding the Fourth Proportional to 478,303.89, 660,089.31 and 263,443.86

Step by Step Solution

1. Step 1: Write the proportion equation
   478,303.89 : 660,089.31 = 263,443.86 : x
2. Step 2: Convert to fraction form
   478,303.89/660,089.31 = 263,443.86/x
3. Step 3: Cross multiply
   478,303.89x = 660,089.31 × 263,443.86
4. Step 4: Simplify right side
   478,303.89x = 173,896,475,771.14
5. Step 5: Solve for x
   x = 173,896,475,771.14/478,303.89
6. Step 6: Final answer
   x = 363,569.02