Finding the Fourth Proportional to 42,719.09, 58,934.27 and 28,576.49

Step by Step Solution

1. Step 1: Write the proportion equation
   42,719.09 : 58,934.27 = 28,576.49 : x
2. Step 2: Convert to fraction form
   42,719.09/58,934.27 = 28,576.49/x
3. Step 3: Cross multiply
   42,719.09x = 58,934.27 × 28,576.49
4. Step 4: Simplify right side
   42,719.09x = 1,684,134,434.43
5. Step 5: Solve for x
   x = 1,684,134,434.43/42,719.09
6. Step 6: Final answer
   x = 39,423.46