Finding the Fourth Proportional to 71,019.01, 98,006.12 and 39,187.89

Step by Step Solution

1. Step 1: Write the proportion equation
   71,019.01 : 98,006.12 = 39,187.89 : x
2. Step 2: Convert to fraction form
   71,019.01/98,006.12 = 39,187.89/x
3. Step 3: Cross multiply
   71,019.01x = 98,006.12 × 39,187.89
4. Step 4: Simplify right side
   71,019.01x = 3,840,653,049.89
5. Step 5: Solve for x
   x = 3,840,653,049.89/71,019.01
6. Step 6: Final answer
   x = 54,079.23