Finding the Fourth Proportional to 143,084.72, 214,631.70 and 71,968.55

Step by Step Solution

1. Step 1: Write the proportion equation
   143,084.72 : 214,631.70 = 71,968.55 : x
2. Step 2: Convert to fraction form
   143,084.72/214,631.70 = 71,968.55/x
3. Step 3: Cross multiply
   143,084.72x = 214,631.70 × 71,968.55
4. Step 4: Simplify right side
   143,084.72x = 15,446,732,233.04
5. Step 5: Solve for x
   x = 15,446,732,233.04/143,084.72
6. Step 6: Final answer
   x = 107,955.15