Finding the Fourth Proportional to 610,417.50, 842,376.15 and 342,145.50

Step by Step Solution

1. Step 1: Write the proportion equation
   610,417.50 : 842,376.15 = 342,145.50 : x
2. Step 2: Convert to fraction form
   610,417.50/842,376.15 = 342,145.50/x
3. Step 3: Cross multiply
   610,417.50x = 842,376.15 × 342,145.50
4. Step 4: Simplify right side
   610,417.50x = 288,215,209,029.83
5. Step 5: Solve for x
   x = 288,215,209,029.83/610,417.50
6. Step 6: Final answer
   x = 472,160.79