Finding the Fourth Proportional to 72,271.47, 108,396.27 and 19,685.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,271.47 : 108,396.27 = 19,685.10 : x
2. Step 2: Convert to fraction form
   72,271.47/108,396.27 = 19,685.10/x
3. Step 3: Cross multiply
   72,271.47x = 108,396.27 × 19,685.10
4. Step 4: Simplify right side
   72,271.47x = 2,133,791,414.58
5. Step 5: Solve for x
   x = 2,133,791,414.58/72,271.47
6. Step 6: Final answer
   x = 29,524.67