Finding the Fourth Proportional to 142,196.48, 212,667.30 and 126,511.58

Step by Step Solution

1. Step 1: Write the proportion equation
   142,196.48 : 212,667.30 = 126,511.58 : x
2. Step 2: Convert to fraction form
   142,196.48/212,667.30 = 126,511.58/x
3. Step 3: Cross multiply
   142,196.48x = 212,667.30 × 126,511.58
4. Step 4: Simplify right side
   142,196.48x = 26,904,876,137.33
5. Step 5: Solve for x
   x = 26,904,876,137.33/142,196.48
6. Step 6: Final answer
   x = 189,209.16