Finding the Fourth Proportional to 123,978.92, 171,087.30 and 67,388.84

Step by Step Solution

1. Step 1: Write the proportion equation
   123,978.92 : 171,087.30 = 67,388.84 : x
2. Step 2: Convert to fraction form
   123,978.92/171,087.30 = 67,388.84/x
3. Step 3: Cross multiply
   123,978.92x = 171,087.30 × 67,388.84
4. Step 4: Simplify right side
   123,978.92x = 11,529,374,685.73
5. Step 5: Solve for x
   x = 11,529,374,685.73/123,978.92
6. Step 6: Final answer
   x = 92,994.64