Finding the Fourth Proportional to 345,819.66, 518,604.72 and 146,155.50

Step by Step Solution

1. Step 1: Write the proportion equation
   345,819.66 : 518,604.72 = 146,155.50 : x
2. Step 2: Convert to fraction form
   345,819.66/518,604.72 = 146,155.50/x
3. Step 3: Cross multiply
   345,819.66x = 518,604.72 × 146,155.50
4. Step 4: Simplify right side
   345,819.66x = 75,796,932,153.96
5. Step 5: Solve for x
   x = 75,796,932,153.96/345,819.66
6. Step 6: Final answer
   x = 219,180.52