Finding the Fourth Proportional to 142,658.22, 213,986.82 and 42,817.98

Step by Step Solution

1. Step 1: Write the proportion equation
   142,658.22 : 213,986.82 = 42,817.98 : x
2. Step 2: Convert to fraction form
   142,658.22/213,986.82 = 42,817.98/x
3. Step 3: Cross multiply
   142,658.22x = 213,986.82 × 42,817.98
4. Step 4: Simplify right side
   142,658.22x = 9,162,483,379.02
5. Step 5: Solve for x
   x = 9,162,483,379.02/142,658.22
6. Step 6: Final answer
   x = 64,226.82