Finding the Fourth Proportional to 47,535.39, 71,297.69 and 12,477.78

Step by Step Solution

1. Step 1: Write the proportion equation
   47,535.39 : 71,297.69 = 12,477.78 : x
2. Step 2: Convert to fraction form
   47,535.39/71,297.69 = 12,477.78/x
3. Step 3: Cross multiply
   47,535.39x = 71,297.69 × 12,477.78
4. Step 4: Simplify right side
   47,535.39x = 889,636,827.94
5. Step 5: Solve for x
   x = 889,636,827.94/47,535.39
6. Step 6: Final answer
   x = 18,715.25