Finding the Fourth Proportional to 142,404.49, 213,419.87 and 104,788.43

Step by Step Solution

1. Step 1: Write the proportion equation
   142,404.49 : 213,419.87 = 104,788.43 : x
2. Step 2: Convert to fraction form
   142,404.49/213,419.87 = 104,788.43/x
3. Step 3: Cross multiply
   142,404.49x = 213,419.87 × 104,788.43
4. Step 4: Simplify right side
   142,404.49x = 22,363,932,302.98
5. Step 5: Solve for x
   x = 22,363,932,302.98/142,404.49
6. Step 6: Final answer
   x = 157,045.14