Finding the Fourth Proportional to 250,300.32, 345,362.67 and 142,905.30

Step by Step Solution

1. Step 1: Write the proportion equation
   250,300.32 : 345,362.67 = 142,905.30 : x
2. Step 2: Convert to fraction form
   250,300.32/345,362.67 = 142,905.30/x
3. Step 3: Cross multiply
   250,300.32x = 345,362.67 × 142,905.30
4. Step 4: Simplify right side
   250,300.32x = 49,354,155,965.15
5. Step 5: Solve for x
   x = 49,354,155,965.15/250,300.32
6. Step 6: Final answer
   x = 197,179.76