Finding the Fourth Proportional to 300,978.72, 415,266.60 and 237,118.32

Step by Step Solution

1. Step 1: Write the proportion equation
   300,978.72 : 415,266.60 = 237,118.32 : x
2. Step 2: Convert to fraction form
   300,978.72/415,266.60 = 237,118.32/x
3. Step 3: Cross multiply
   300,978.72x = 415,266.60 × 237,118.32
4. Step 4: Simplify right side
   300,978.72x = 98,467,318,544.11
5. Step 5: Solve for x
   x = 98,467,318,544.11/300,978.72
6. Step 6: Final answer
   x = 327,157.08