Finding the Fourth Proportional to 124,978.14, 172,469.82 and 68,389.50

Step by Step Solution

1. Step 1: Write the proportion equation
   124,978.14 : 172,469.82 = 68,389.50 : x
2. Step 2: Convert to fraction form
   124,978.14/172,469.82 = 68,389.50/x
3. Step 3: Cross multiply
   124,978.14x = 172,469.82 × 68,389.50
4. Step 4: Simplify right side
   124,978.14x = 11,795,124,754.89
5. Step 5: Solve for x
   x = 11,795,124,754.89/124,978.14
6. Step 6: Final answer
   x = 94,377.50