Finding the Fourth Proportional to 99,993.88, 137,993.03 and 67,738.37

Step by Step Solution

1. Step 1: Write the proportion equation
   99,993.88 : 137,993.03 = 67,738.37 : x
2. Step 2: Convert to fraction form
   99,993.88/137,993.03 = 67,738.37/x
3. Step 3: Cross multiply
   99,993.88x = 137,993.03 × 67,738.37
4. Step 4: Simplify right side
   99,993.88x = 9,347,422,233.60
5. Step 5: Solve for x
   x = 9,347,422,233.60/99,993.88
6. Step 6: Final answer
   x = 93,479.94