Finding the Fourth Proportional to 71,020.82, 98,005.86 and 39,189.30

Step by Step Solution

1. Step 1: Write the proportion equation
   71,020.82 : 98,005.86 = 39,189.30 : x
2. Step 2: Convert to fraction form
   71,020.82/98,005.86 = 39,189.30/x
3. Step 3: Cross multiply
   71,020.82x = 98,005.86 × 39,189.30
4. Step 4: Simplify right side
   71,020.82x = 3,840,781,049.30
5. Step 5: Solve for x
   x = 3,840,781,049.30/71,020.82
6. Step 6: Final answer
   x = 54,079.65