Finding the Fourth Proportional to 109,082.47, 150,409.69 and 76,806.78

Step by Step Solution

1. Step 1: Write the proportion equation
   109,082.47 : 150,409.69 = 76,806.78 : x
2. Step 2: Convert to fraction form
   109,082.47/150,409.69 = 76,806.78/x
3. Step 3: Cross multiply
   109,082.47x = 150,409.69 × 76,806.78
4. Step 4: Simplify right side
   109,082.47x = 11,552,483,969.70
5. Step 5: Solve for x
   x = 11,552,483,969.70/109,082.47
6. Step 6: Final answer
   x = 105,905.96