Finding the Fourth Proportional to 72,014.48, 99,379.12 and 39,749.34

Step by Step Solution

1. Step 1: Write the proportion equation
   72,014.48 : 99,379.12 = 39,749.34 : x
2. Step 2: Convert to fraction form
   72,014.48/99,379.12 = 39,749.34/x
3. Step 3: Cross multiply
   72,014.48x = 99,379.12 × 39,749.34
4. Step 4: Simplify right side
   72,014.48x = 3,950,254,429.78
5. Step 5: Solve for x
   x = 3,950,254,429.78/72,014.48
6. Step 6: Final answer
   x = 54,853.61