Finding the Fourth Proportional to 470,900.76, 705,574.72 and 271,388.85

Step by Step Solution

1. Step 1: Write the proportion equation
   470,900.76 : 705,574.72 = 271,388.85 : x
2. Step 2: Convert to fraction form
   470,900.76/705,574.72 = 271,388.85/x
3. Step 3: Cross multiply
   470,900.76x = 705,574.72 × 271,388.85
4. Step 4: Simplify right side
   470,900.76x = 191,485,111,849.87
5. Step 5: Solve for x
   x = 191,485,111,849.87/470,900.76
6. Step 6: Final answer
   x = 406,635.81