Finding the Fourth Proportional to 126,036.33, 173,923.57 and 78,288.72

Step by Step Solution

1. Step 1: Write the proportion equation
   126,036.33 : 173,923.57 = 78,288.72 : x
2. Step 2: Convert to fraction form
   126,036.33/173,923.57 = 78,288.72/x
3. Step 3: Cross multiply
   126,036.33x = 173,923.57 × 78,288.72
4. Step 4: Simplify right side
   126,036.33x = 13,616,253,673.13
5. Step 5: Solve for x
   x = 13,616,253,673.13/126,036.33
6. Step 6: Final answer
   x = 108,034.36