Finding the Fourth Proportional to 67,127.71, 100,685.06 and 20,380.99

Step by Step Solution

1. Step 1: Write the proportion equation
   67,127.71 : 100,685.06 = 20,380.99 : x
2. Step 2: Convert to fraction form
   67,127.71/100,685.06 = 20,380.99/x
3. Step 3: Cross multiply
   67,127.71x = 100,685.06 × 20,380.99
4. Step 4: Simplify right side
   67,127.71x = 2,052,061,099.10
5. Step 5: Solve for x
   x = 2,052,061,099.10/67,127.71
6. Step 6: Final answer
   x = 30,569.51