Finding the Fourth Proportional to 71,719.24, 98,976.06 and 39,887.46

Step by Step Solution

1. Step 1: Write the proportion equation
   71,719.24 : 98,976.06 = 39,887.46 : x
2. Step 2: Convert to fraction form
   71,719.24/98,976.06 = 39,887.46/x
3. Step 3: Cross multiply
   71,719.24x = 98,976.06 × 39,887.46
4. Step 4: Simplify right side
   71,719.24x = 3,947,902,939.89
5. Step 5: Solve for x
   x = 3,947,902,939.89/71,719.24
6. Step 6: Final answer
   x = 55,046.64