Finding the Fourth Proportional to 480,726.72, 663,460.56 and 279,522.72

Step by Step Solution

1. Step 1: Write the proportion equation
   480,726.72 : 663,460.56 = 279,522.72 : x
2. Step 2: Convert to fraction form
   480,726.72/663,460.56 = 279,522.72/x
3. Step 3: Cross multiply
   480,726.72x = 663,460.56 × 279,522.72
4. Step 4: Simplify right side
   480,726.72x = 185,452,300,343.92
5. Step 5: Solve for x
   x = 185,452,300,343.92/480,726.72
6. Step 6: Final answer
   x = 385,774.90