Finding the Fourth Proportional to 67,208.13, 92,708.55 and 42,013.89

Step by Step Solution

1. Step 1: Write the proportion equation
   67,208.13 : 92,708.55 = 42,013.89 : x
2. Step 2: Convert to fraction form
   67,208.13/92,708.55 = 42,013.89/x
3. Step 3: Cross multiply
   67,208.13x = 92,708.55 × 42,013.89
4. Step 4: Simplify right side
   67,208.13x = 3,895,046,821.76
5. Step 5: Solve for x
   x = 3,895,046,821.76/67,208.13
6. Step 6: Final answer
   x = 57,954.99