Finding the Fourth Proportional to 42,233.78, 58,305.75 and 28,825.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,233.78 : 58,305.75 = 28,825.04 : x
2. Step 2: Convert to fraction form
   42,233.78/58,305.75 = 28,825.04/x
3. Step 3: Cross multiply
   42,233.78x = 58,305.75 × 28,825.04
4. Step 4: Simplify right side
   42,233.78x = 1,680,665,575.98
5. Step 5: Solve for x
   x = 1,680,665,575.98/42,233.78
6. Step 6: Final answer
   x = 39,794.34