Finding the Fourth Proportional to 466,783.71, 642,806.00 and 405,501.87

Step by Step Solution

1. Step 1: Write the proportion equation
   466,783.71 : 642,806.00 = 405,501.87 : x
2. Step 2: Convert to fraction form
   466,783.71/642,806.00 = 405,501.87/x
3. Step 3: Cross multiply
   466,783.71x = 642,806.00 × 405,501.87
4. Step 4: Simplify right side
   466,783.71x = 260,659,033,019.71
5. Step 5: Solve for x
   x = 260,659,033,019.71/466,783.71
6. Step 6: Final answer
   x = 558,415.02