Finding the Fourth Proportional to 72,110.24, 99,510.49 and 40,279.06

Step by Step Solution

1. Step 1: Write the proportion equation
   72,110.24 : 99,510.49 = 40,279.06 : x
2. Step 2: Convert to fraction form
   72,110.24/99,510.49 = 40,279.06/x
3. Step 3: Cross multiply
   72,110.24x = 99,510.49 × 40,279.06
4. Step 4: Simplify right side
   72,110.24x = 4,008,188,997.34
5. Step 5: Solve for x
   x = 4,008,188,997.34/72,110.24
6. Step 6: Final answer
   x = 55,584.19