Finding the Fourth Proportional to 102,112.72, 140,876.22 and 75,318.73

Step by Step Solution

1. Step 1: Write the proportion equation
   102,112.72 : 140,876.22 = 75,318.73 : x
2. Step 2: Convert to fraction form
   102,112.72/140,876.22 = 75,318.73/x
3. Step 3: Cross multiply
   102,112.72x = 140,876.22 × 75,318.73
4. Step 4: Simplify right side
   102,112.72x = 10,610,617,977.60
5. Step 5: Solve for x
   x = 10,610,617,977.60/102,112.72
6. Step 6: Final answer
   x = 103,910.83