Finding the Fourth Proportional to 143,389.72, 214,982.16 and 67,445.76

Step by Step Solution

1. Step 1: Write the proportion equation
   143,389.72 : 214,982.16 = 67,445.76 : x
2. Step 2: Convert to fraction form
   143,389.72/214,982.16 = 67,445.76/x
3. Step 3: Cross multiply
   143,389.72x = 214,982.16 × 67,445.76
4. Step 4: Simplify right side
   143,389.72x = 14,499,635,167.64
5. Step 5: Solve for x
   x = 14,499,635,167.64/143,389.72
6. Step 6: Final answer
   x = 101,120.47