Finding the Fourth Proportional to 72,215.03, 99,654.87 and 39,950.84

Step by Step Solution

1. Step 1: Write the proportion equation
   72,215.03 : 99,654.87 = 39,950.84 : x
2. Step 2: Convert to fraction form
   72,215.03/99,654.87 = 39,950.84/x
3. Step 3: Cross multiply
   72,215.03x = 99,654.87 × 39,950.84
4. Step 4: Simplify right side
   72,215.03x = 3,981,295,766.59
5. Step 5: Solve for x
   x = 3,981,295,766.59/72,215.03
6. Step 6: Final answer
   x = 55,131.12