Finding the Fourth Proportional to 617,152.72, 851,749.52 and 345,235.72

Step by Step Solution

1. Step 1: Write the proportion equation
   617,152.72 : 851,749.52 = 345,235.72 : x
2. Step 2: Convert to fraction form
   617,152.72/851,749.52 = 345,235.72/x
3. Step 3: Cross multiply
   617,152.72x = 851,749.52 × 345,235.72
4. Step 4: Simplify right side
   617,152.72x = 294,054,358,796.85
5. Step 5: Solve for x
   x = 294,054,358,796.85/617,152.72
6. Step 6: Final answer
   x = 476,469.36