Finding the Fourth Proportional to 143,417.72, 214,782.06 and 80,082.20

Step by Step Solution

1. Step 1: Write the proportion equation
   143,417.72 : 214,782.06 = 80,082.20 : x
2. Step 2: Convert to fraction form
   143,417.72/214,782.06 = 80,082.20/x
3. Step 3: Cross multiply
   143,417.72x = 214,782.06 × 80,082.20
4. Step 4: Simplify right side
   143,417.72x = 17,200,219,885.33
5. Step 5: Solve for x
   x = 17,200,219,885.33/143,417.72
6. Step 6: Final answer
   x = 119,930.93