Finding the Fourth Proportional to 142,443.79, 213,770.75 and 67,564.18

Step by Step Solution

1. Step 1: Write the proportion equation
   142,443.79 : 213,770.75 = 67,564.18 : x
2. Step 2: Convert to fraction form
   142,443.79/213,770.75 = 67,564.18/x
3. Step 3: Cross multiply
   142,443.79x = 213,770.75 × 67,564.18
4. Step 4: Simplify right side
   142,443.79x = 14,443,244,158.67
5. Step 5: Solve for x
   x = 14,443,244,158.67/142,443.79
6. Step 6: Final answer
   x = 101,396.10