Finding the Fourth Proportional to 142,294.02, 196,369.68 and 78,635.82

Step by Step Solution

1. Step 1: Write the proportion equation
   142,294.02 : 196,369.68 = 78,635.82 : x
2. Step 2: Convert to fraction form
   142,294.02/196,369.68 = 78,635.82/x
3. Step 3: Cross multiply
   142,294.02x = 196,369.68 × 78,635.82
4. Step 4: Simplify right side
   142,294.02x = 15,441,690,809.94
5. Step 5: Solve for x
   x = 15,441,690,809.94/142,294.02
6. Step 6: Final answer
   x = 108,519.60