Finding the Fourth Proportional to 626,098.86, 864,016.56 and 354,160.98

Step by Step Solution

1. Step 1: Write the proportion equation
   626,098.86 : 864,016.56 = 354,160.98 : x
2. Step 2: Convert to fraction form
   626,098.86/864,016.56 = 354,160.98/x
3. Step 3: Cross multiply
   626,098.86x = 864,016.56 × 354,160.98
4. Step 4: Simplify right side
   626,098.86x = 306,000,951,625.83
5. Step 5: Solve for x
   x = 306,000,951,625.83/626,098.86
6. Step 6: Final answer
   x = 488,742.23