Finding the Fourth Proportional to 126,456.72, 174,508.20 and 69,870.48

Step by Step Solution

1. Step 1: Write the proportion equation
   126,456.72 : 174,508.20 = 69,870.48 : x
2. Step 2: Convert to fraction form
   126,456.72/174,508.20 = 69,870.48/x
3. Step 3: Cross multiply
   126,456.72x = 174,508.20 × 69,870.48
4. Step 4: Simplify right side
   126,456.72x = 12,192,971,697.94
5. Step 5: Solve for x
   x = 12,192,971,697.94/126,456.72
6. Step 6: Final answer
   x = 96,420.12