Finding the Fourth Proportional to 102,082.37, 140,981.25 and 90,950.54

Step by Step Solution

1. Step 1: Write the proportion equation
   102,082.37 : 140,981.25 = 90,950.54 : x
2. Step 2: Convert to fraction form
   102,082.37/140,981.25 = 90,950.54/x
3. Step 3: Cross multiply
   102,082.37x = 140,981.25 × 90,950.54
4. Step 4: Simplify right side
   102,082.37x = 12,822,320,112.47
5. Step 5: Solve for x
   x = 12,822,320,112.47/102,082.37
6. Step 6: Final answer
   x = 125,607.59