Finding the Fourth Proportional to 42,268.75, 63,379.41 and 28,956.79

Step by Step Solution

1. Step 1: Write the proportion equation
   42,268.75 : 63,379.41 = 28,956.79 : x
2. Step 2: Convert to fraction form
   42,268.75/63,379.41 = 28,956.79/x
3. Step 3: Cross multiply
   42,268.75x = 63,379.41 × 28,956.79
4. Step 4: Simplify right side
   42,268.75x = 1,835,264,265.69
5. Step 5: Solve for x
   x = 1,835,264,265.69/42,268.75
6. Step 6: Final answer
   x = 43,418.94