Finding the Fourth Proportional to 618,628.72, 853,667.24 and 363,930.72

Step by Step Solution

1. Step 1: Write the proportion equation
   618,628.72 : 853,667.24 = 363,930.72 : x
2. Step 2: Convert to fraction form
   618,628.72/853,667.24 = 363,930.72/x
3. Step 3: Cross multiply
   618,628.72x = 853,667.24 × 363,930.72
4. Step 4: Simplify right side
   618,628.72x = 310,675,733,293.61
5. Step 5: Solve for x
   x = 310,675,733,293.61/618,628.72
6. Step 6: Final answer
   x = 502,200.63