Finding the Fourth Proportional to 142,404.24, 213,419.50 and 104,788.18

Step by Step Solution

1. Step 1: Write the proportion equation
   142,404.24 : 213,419.50 = 104,788.18 : x
2. Step 2: Convert to fraction form
   142,404.24/213,419.50 = 104,788.18/x
3. Step 3: Cross multiply
   142,404.24x = 213,419.50 × 104,788.18
4. Step 4: Simplify right side
   142,404.24x = 22,363,839,914.41
5. Step 5: Solve for x
   x = 22,363,839,914.41/142,404.24
6. Step 6: Final answer
   x = 157,044.76