Finding the Fourth Proportional to 626,100.86, 864,019.32 and 354,162.98

Step by Step Solution

1. Step 1: Write the proportion equation
   626,100.86 : 864,019.32 = 354,162.98 : x
2. Step 2: Convert to fraction form
   626,100.86/864,019.32 = 354,162.98/x
3. Step 3: Cross multiply
   626,100.86x = 864,019.32 × 354,162.98
4. Step 4: Simplify right side
   626,100.86x = 306,003,657,148.77
5. Step 5: Solve for x
   x = 306,003,657,148.77/626,100.86
6. Step 6: Final answer
   x = 488,744.99