Finding the Fourth Proportional to 47,105.62, 70,686.51 and 19,039.30

Step by Step Solution

1. Step 1: Write the proportion equation
   47,105.62 : 70,686.51 = 19,039.30 : x
2. Step 2: Convert to fraction form
   47,105.62/70,686.51 = 19,039.30/x
3. Step 3: Cross multiply
   47,105.62x = 70,686.51 × 19,039.30
4. Step 4: Simplify right side
   47,105.62x = 1,345,821,669.84
5. Step 5: Solve for x
   x = 1,345,821,669.84/47,105.62
6. Step 6: Final answer
   x = 28,570.30