Finding the Fourth Proportional to 143,786.93, 215,680.55 and 143,579.27

Step by Step Solution

1. Step 1: Write the proportion equation
   143,786.93 : 215,680.55 = 143,579.27 : x
2. Step 2: Convert to fraction form
   143,786.93/215,680.55 = 143,579.27/x
3. Step 3: Cross multiply
   143,786.93x = 215,680.55 × 143,579.27
4. Step 4: Simplify right side
   143,786.93x = 30,967,256,820.35
5. Step 5: Solve for x
   x = 30,967,256,820.35/143,786.93
6. Step 6: Final answer
   x = 215,369.06