Finding the Fourth Proportional to 2,105,159.73, 3,158,129.15 and 666,205.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,159.73 : 3,158,129.15 = 666,205.31 : x
2. Step 2: Convert to fraction form
   2,105,159.73/3,158,129.15 = 666,205.31/x
3. Step 3: Cross multiply
   2,105,159.73x = 3,158,129.15 × 666,205.31
4. Step 4: Simplify right side
   2,105,159.73x = 2,103,962,398,693.88
5. Step 5: Solve for x
   x = 2,103,962,398,693.88/2,105,159.73
6. Step 6: Final answer
   x = 999,431.24