Finding the Fourth Proportional to 47,772.18, 71,659.89 and 12,711.87

Step by Step Solution

1. Step 1: Write the proportion equation
   47,772.18 : 71,659.89 = 12,711.87 : x
2. Step 2: Convert to fraction form
   47,772.18/71,659.89 = 12,711.87/x
3. Step 3: Cross multiply
   47,772.18x = 71,659.89 × 12,711.87
4. Step 4: Simplify right side
   47,772.18x = 910,931,205.89
5. Step 5: Solve for x
   x = 910,931,205.89/47,772.18
6. Step 6: Final answer
   x = 19,068.24