Finding the Fourth Proportional to 861,346.50, 1,188,658.17 and 479,463.50

Step by Step Solution

1. Step 1: Write the proportion equation
   861,346.50 : 1,188,658.17 = 479,463.50 : x
2. Step 2: Convert to fraction form
   861,346.50/1,188,658.17 = 479,463.50/x
3. Step 3: Cross multiply
   861,346.50x = 1,188,658.17 × 479,463.50
4. Step 4: Simplify right side
   861,346.50x = 569,918,200,548.50
5. Step 5: Solve for x
   x = 569,918,200,548.50/861,346.50
6. Step 6: Final answer
   x = 661,659.62