Finding the Fourth Proportional to 288,271.32, 430,514.34 and 245,697.72

Step by Step Solution

1. Step 1: Write the proportion equation
   288,271.32 : 430,514.34 = 245,697.72 : x
2. Step 2: Convert to fraction form
   288,271.32/430,514.34 = 245,697.72/x
3. Step 3: Cross multiply
   288,271.32x = 430,514.34 × 245,697.72
4. Step 4: Simplify right side
   288,271.32x = 105,776,391,765.31
5. Step 5: Solve for x
   x = 105,776,391,765.31/288,271.32
6. Step 6: Final answer
   x = 366,933.46