Finding the Fourth Proportional to 142,462.89, 213,633.59 and 42,621.48

Step by Step Solution

1. Step 1: Write the proportion equation
   142,462.89 : 213,633.59 = 42,621.48 : x
2. Step 2: Convert to fraction form
   142,462.89/213,633.59 = 42,621.48/x
3. Step 3: Cross multiply
   142,462.89x = 213,633.59 × 42,621.48
4. Step 4: Simplify right side
   142,462.89x = 9,105,379,570.41
5. Step 5: Solve for x
   x = 9,105,379,570.41/142,462.89
6. Step 6: Final answer
   x = 63,914.05