Finding the Fourth Proportional to 71,707.32, 98,958.54 and 39,443.31

Step by Step Solution

1. Step 1: Write the proportion equation
   71,707.32 : 98,958.54 = 39,443.31 : x
2. Step 2: Convert to fraction form
   71,707.32/98,958.54 = 39,443.31/x
3. Step 3: Cross multiply
   71,707.32x = 98,958.54 × 39,443.31
4. Step 4: Simplify right side
   71,707.32x = 3,903,252,370.37
5. Step 5: Solve for x
   x = 3,903,252,370.37/71,707.32
6. Step 6: Final answer
   x = 54,433.11