Finding the Fourth Proportional to 142,057.53, 196,113.10 and 103,774.09

Step by Step Solution

1. Step 1: Write the proportion equation
   142,057.53 : 196,113.10 = 103,774.09 : x
2. Step 2: Convert to fraction form
   142,057.53/196,113.10 = 103,774.09/x
3. Step 3: Cross multiply
   142,057.53x = 196,113.10 × 103,774.09
4. Step 4: Simplify right side
   142,057.53x = 20,351,457,970.71
5. Step 5: Solve for x
   x = 20,351,457,970.71/142,057.53
6. Step 6: Final answer
   x = 143,262.09