Finding the Fourth Proportional to 126,501.72, 174,578.94 and 72,786.84

Step by Step Solution

1. Step 1: Write the proportion equation
   126,501.72 : 174,578.94 = 72,786.84 : x
2. Step 2: Convert to fraction form
   126,501.72/174,578.94 = 72,786.84/x
3. Step 3: Cross multiply
   126,501.72x = 174,578.94 × 72,786.84
4. Step 4: Simplify right side
   126,501.72x = 12,707,049,373.15
5. Step 5: Solve for x
   x = 12,707,049,373.15/126,501.72
6. Step 6: Final answer
   x = 100,449.62