Finding the Fourth Proportional to 67,398.09, 93,013.98 and 39,103.80

Step by Step Solution

1. Step 1: Write the proportion equation
   67,398.09 : 93,013.98 = 39,103.80 : x
2. Step 2: Convert to fraction form
   67,398.09/93,013.98 = 39,103.80/x
3. Step 3: Cross multiply
   67,398.09x = 93,013.98 × 39,103.80
4. Step 4: Simplify right side
   67,398.09x = 3,637,200,071.12
5. Step 5: Solve for x
   x = 3,637,200,071.12/67,398.09
6. Step 6: Final answer
   x = 53,965.92