Finding the Fourth Proportional to 353,804.24, 530,913.72 and 253,856.72

Step by Step Solution

1. Step 1: Write the proportion equation
   353,804.24 : 530,913.72 = 253,856.72 : x
2. Step 2: Convert to fraction form
   353,804.24/530,913.72 = 253,856.72/x
3. Step 3: Cross multiply
   353,804.24x = 530,913.72 × 253,856.72
4. Step 4: Simplify right side
   353,804.24x = 134,776,015,562.20
5. Step 5: Solve for x
   x = 134,776,015,562.20/353,804.24
6. Step 6: Final answer
   x = 380,933.86