Finding the Fourth Proportional to 721,162.32, 1,081,994.37 and 272,012.05

Step by Step Solution

1. Step 1: Write the proportion equation
   721,162.32 : 1,081,994.37 = 272,012.05 : x
2. Step 2: Convert to fraction form
   721,162.32/1,081,994.37 = 272,012.05/x
3. Step 3: Cross multiply
   721,162.32x = 1,081,994.37 × 272,012.05
4. Step 4: Simplify right side
   721,162.32x = 294,315,506,672.16
5. Step 5: Solve for x
   x = 294,315,506,672.16/721,162.32
6. Step 6: Final answer
   x = 408,112.71