Finding the Fourth Proportional to 42,344.76, 58,463.34 and 28,911.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,344.76 : 58,463.34 = 28,911.12 : x
2. Step 2: Convert to fraction form
   42,344.76/58,463.34 = 28,911.12/x
3. Step 3: Cross multiply
   42,344.76x = 58,463.34 × 28,911.12
4. Step 4: Simplify right side
   42,344.76x = 1,690,240,638.34
5. Step 5: Solve for x
   x = 1,690,240,638.34/42,344.76
6. Step 6: Final answer
   x = 39,916.17