Finding the Fourth Proportional to 143,238.24, 214,883.28 and 49,718.88

Step by Step Solution

1. Step 1: Write the proportion equation
   143,238.24 : 214,883.28 = 49,718.88 : x
2. Step 2: Convert to fraction form
   143,238.24/214,883.28 = 49,718.88/x
3. Step 3: Cross multiply
   143,238.24x = 214,883.28 × 49,718.88
4. Step 4: Simplify right side
   143,238.24x = 10,683,756,012.33
5. Step 5: Solve for x
   x = 10,683,756,012.33/143,238.24
6. Step 6: Final answer
   x = 74,587.32