Finding the Fourth Proportional to 91,456.72, 126,215.18 and 51,168.08

Step by Step Solution

1. Step 1: Write the proportion equation
   91,456.72 : 126,215.18 = 51,168.08 : x
2. Step 2: Convert to fraction form
   91,456.72/126,215.18 = 51,168.08/x
3. Step 3: Cross multiply
   91,456.72x = 126,215.18 × 51,168.08
4. Step 4: Simplify right side
   91,456.72x = 6,458,188,427.45
5. Step 5: Solve for x
   x = 6,458,188,427.45/91,456.72
6. Step 6: Final answer
   x = 70,614.70