Finding the Fourth Proportional to 2,142,070.58, 3,211,089.50 and 721,134.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142,070.58 : 3,211,089.50 = 721,134.02 : x
2. Step 2: Convert to fraction form
   2,142,070.58/3,211,089.50 = 721,134.02/x
3. Step 3: Cross multiply
   2,142,070.58x = 3,211,089.50 × 721,134.02
4. Step 4: Simplify right side
   2,142,070.58x = 2,315,625,860,053.67
5. Step 5: Solve for x
   x = 2,315,625,860,053.67/2,142,070.58
6. Step 6: Final answer
   x = 1,081,022.21