Finding the Fourth Proportional to 250,340.46, 345,484.56 and 142,944.18

Step by Step Solution

1. Step 1: Write the proportion equation
   250,340.46 : 345,484.56 = 142,944.18 : x
2. Step 2: Convert to fraction form
   250,340.46/345,484.56 = 142,944.18/x
3. Step 3: Cross multiply
   250,340.46x = 345,484.56 × 142,944.18
4. Step 4: Simplify right side
   250,340.46x = 49,385,007,131.86
5. Step 5: Solve for x
   x = 49,385,007,131.86/250,340.46
6. Step 6: Final answer
   x = 197,271.38