Finding the Fourth Proportional to 72,381.57, 108,695.67 and 47,124.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,381.57 : 108,695.67 = 47,124.10 : x
2. Step 2: Convert to fraction form
   72,381.57/108,695.67 = 47,124.10/x
3. Step 3: Cross multiply
   72,381.57x = 108,695.67 × 47,124.10
4. Step 4: Simplify right side
   72,381.57x = 5,122,185,622.65
5. Step 5: Solve for x
   x = 5,122,185,622.65/72,381.57
6. Step 6: Final answer
   x = 70,766.43