Finding the Fourth Proportional to 300,961.68, 451,501.49 and 111,423.60

Step by Step Solution

1. Step 1: Write the proportion equation
   300,961.68 : 451,501.49 = 111,423.60 : x
2. Step 2: Convert to fraction form
   300,961.68/451,501.49 = 111,423.60/x
3. Step 3: Cross multiply
   300,961.68x = 451,501.49 × 111,423.60
4. Step 4: Simplify right side
   300,961.68x = 50,307,921,699.72
5. Step 5: Solve for x
   x = 50,307,921,699.72/300,961.68
6. Step 6: Final answer
   x = 167,157.24