Finding the Fourth Proportional to 126,209.01, 188,978.17 and 76,221.48

Step by Step Solution

1. Step 1: Write the proportion equation
   126,209.01 : 188,978.17 = 76,221.48 : x
2. Step 2: Convert to fraction form
   126,209.01/188,978.17 = 76,221.48/x
3. Step 3: Cross multiply
   126,209.01x = 188,978.17 × 76,221.48
4. Step 4: Simplify right side
   126,209.01x = 14,404,195,805.09
5. Step 5: Solve for x
   x = 14,404,195,805.09/126,209.01
6. Step 6: Final answer
   x = 114,129.69