Finding the Fourth Proportional to 99,994.38, 137,993.72 and 67,738.87

Step by Step Solution

1. Step 1: Write the proportion equation
   99,994.38 : 137,993.72 = 67,738.87 : x
2. Step 2: Convert to fraction form
   99,994.38/137,993.72 = 67,738.87/x
3. Step 3: Cross multiply
   99,994.38x = 137,993.72 × 67,738.87
4. Step 4: Simplify right side
   99,994.38x = 9,347,538,659.90
5. Step 5: Solve for x
   x = 9,347,538,659.90/99,994.38
6. Step 6: Final answer
   x = 93,480.64