Finding the Fourth Proportional to 72,951.57, 100,673.13 and 39,417.57

Step by Step Solution

1. Step 1: Write the proportion equation
   72,951.57 : 100,673.13 = 39,417.57 : x
2. Step 2: Convert to fraction form
   72,951.57/100,673.13 = 39,417.57/x
3. Step 3: Cross multiply
   72,951.57x = 100,673.13 × 39,417.57
4. Step 4: Simplify right side
   72,951.57x = 3,968,290,148.89
5. Step 5: Solve for x
   x = 3,968,290,148.89/72,951.57
6. Step 6: Final answer
   x = 54,396.23