Finding the Fourth Proportional to 774,688.82, 1,162,100.18 and 213,723.32

Step by Step Solution

1. Step 1: Write the proportion equation
   774,688.82 : 1,162,100.18 = 213,723.32 : x
2. Step 2: Convert to fraction form
   774,688.82/1,162,100.18 = 213,723.32/x
3. Step 3: Cross multiply
   774,688.82x = 1,162,100.18 × 213,723.32
4. Step 4: Simplify right side
   774,688.82x = 248,367,903,366.01
5. Step 5: Solve for x
   x = 248,367,903,366.01/774,688.82
6. Step 6: Final answer
   x = 320,603.45