Finding the Fourth Proportional to 142,667.49, 213,855.42 and 92,847.63

Step by Step Solution

1. Step 1: Write the proportion equation
   142,667.49 : 213,855.42 = 92,847.63 : x
2. Step 2: Convert to fraction form
   142,667.49/213,855.42 = 92,847.63/x
3. Step 3: Cross multiply
   142,667.49x = 213,855.42 × 92,847.63
4. Step 4: Simplify right side
   142,667.49x = 19,855,968,909.65
5. Step 5: Solve for x
   x = 19,855,968,909.65/142,667.49
6. Step 6: Final answer
   x = 139,176.55