Finding the Fourth Proportional to 300,054.27, 449,770.35 and 142,162.59

Step by Step Solution

1. Step 1: Write the proportion equation
   300,054.27 : 449,770.35 = 142,162.59 : x
2. Step 2: Convert to fraction form
   300,054.27/449,770.35 = 142,162.59/x
3. Step 3: Cross multiply
   300,054.27x = 449,770.35 × 142,162.59
4. Step 4: Simplify right side
   300,054.27x = 63,940,517,861.21
5. Step 5: Solve for x
   x = 63,940,517,861.21/300,054.27
6. Step 6: Final answer
   x = 213,096.51