Finding the Fourth Proportional to 219,902.55, 303,494.10 and 123,143.24

Step by Step Solution

1. Step 1: Write the proportion equation
   219,902.55 : 303,494.10 = 123,143.24 : x
2. Step 2: Convert to fraction form
   219,902.55/303,494.10 = 123,143.24/x
3. Step 3: Cross multiply
   219,902.55x = 303,494.10 × 123,143.24
4. Step 4: Simplify right side
   219,902.55x = 37,373,247,091.83
5. Step 5: Solve for x
   x = 37,373,247,091.83/219,902.55
6. Step 6: Final answer
   x = 169,953.68