Finding the Fourth Proportional to 142,456.89, 213,624.59 and 42,615.48

Step by Step Solution

1. Step 1: Write the proportion equation
   142,456.89 : 213,624.59 = 42,615.48 : x
2. Step 2: Convert to fraction form
   142,456.89/213,624.59 = 42,615.48/x
3. Step 3: Cross multiply
   142,456.89x = 213,624.59 × 42,615.48
4. Step 4: Simplify right side
   142,456.89x = 9,103,714,229.58
5. Step 5: Solve for x
   x = 9,103,714,229.58/142,456.89
6. Step 6: Final answer
   x = 63,905.05