Finding the Fourth Proportional to 345,820.66, 518,606.22 and 146,156.50

Step by Step Solution

1. Step 1: Write the proportion equation
   345,820.66 : 518,606.22 = 146,156.50 : x
2. Step 2: Convert to fraction form
   345,820.66/518,606.22 = 146,156.50/x
3. Step 3: Cross multiply
   345,820.66x = 518,606.22 × 146,156.50
4. Step 4: Simplify right side
   345,820.66x = 75,797,669,993.43
5. Step 5: Solve for x
   x = 75,797,669,993.43/345,820.66
6. Step 6: Final answer
   x = 219,182.02