Finding the Fourth Proportional to 865,123.61, 1,193,866.83 and 477,939.02

Step by Step Solution

1. Step 1: Write the proportion equation
   865,123.61 : 1,193,866.83 = 477,939.02 : x
2. Step 2: Convert to fraction form
   865,123.61/1,193,866.83 = 477,939.02/x
3. Step 3: Cross multiply
   865,123.61x = 1,193,866.83 × 477,939.02
4. Step 4: Simplify right side
   865,123.61x = 570,595,536,771.37
5. Step 5: Solve for x
   x = 570,595,536,771.37/865,123.61
6. Step 6: Final answer
   x = 659,553.77