Finding the Fourth Proportional to 71,479.27, 107,083.56 and 47,715.15

Step by Step Solution

1. Step 1: Write the proportion equation
   71,479.27 : 107,083.56 = 47,715.15 : x
2. Step 2: Convert to fraction form
   71,479.27/107,083.56 = 47,715.15/x
3. Step 3: Cross multiply
   71,479.27x = 107,083.56 × 47,715.15
4. Step 4: Simplify right side
   71,479.27x = 5,109,508,127.93
5. Step 5: Solve for x
   x = 5,109,508,127.93/71,479.27
6. Step 6: Final answer
   x = 71,482.38