Finding the Fourth Proportional to 67,872.97, 93,719.73 and 42,409

Step by Step Solution

1. Step 1: Write the proportion equation
   67,872.97 : 93,719.73 = 42,409 : x
2. Step 2: Convert to fraction form
   67,872.97/93,719.73 = 42,409/x
3. Step 3: Cross multiply
   67,872.97x = 93,719.73 × 42,409
4. Step 4: Simplify right side
   67,872.97x = 3,974,560,029.57
5. Step 5: Solve for x
   x = 3,974,560,029.57/67,872.97
6. Step 6: Final answer
   x = 58,558.81