Finding the Fourth Proportional to 301,047.50, 451,601.50 and 79,431.50

Step by Step Solution

1. Step 1: Write the proportion equation
   301,047.50 : 451,601.50 = 79,431.50 : x
2. Step 2: Convert to fraction form
   301,047.50/451,601.50 = 79,431.50/x
3. Step 3: Cross multiply
   301,047.50x = 451,601.50 × 79,431.50
4. Step 4: Simplify right side
   301,047.50x = 35,871,384,547.25
5. Step 5: Solve for x
   x = 35,871,384,547.25/301,047.50
6. Step 6: Final answer
   x = 119,155.23