Finding the Fourth Proportional to 213,426.72, 320,136.42 and 63,667.44

Step by Step Solution

1. Step 1: Write the proportion equation
   213,426.72 : 320,136.42 = 63,667.44 : x
2. Step 2: Convert to fraction form
   213,426.72/320,136.42 = 63,667.44/x
3. Step 3: Cross multiply
   213,426.72x = 320,136.42 × 63,667.44
4. Step 4: Simplify right side
   213,426.72x = 20,382,266,312.16
5. Step 5: Solve for x
   x = 20,382,266,312.16/213,426.72
6. Step 6: Final answer
   x = 95,500.07