Finding the Fourth Proportional to 51,123.12, 76,757.04 and 28,980

Step by Step Solution

1. Step 1: Write the proportion equation
   51,123.12 : 76,757.04 = 28,980 : x
2. Step 2: Convert to fraction form
   51,123.12/76,757.04 = 28,980/x
3. Step 3: Cross multiply
   51,123.12x = 76,757.04 × 28,980
4. Step 4: Simplify right side
   51,123.12x = 2,224,419,019.20
5. Step 5: Solve for x
   x = 2,224,419,019.20/51,123.12
6. Step 6: Final answer
   x = 43,511.02