Finding the Fourth Proportional to 42,391.72, 58,516.28 and 36,399.32

Step by Step Solution

1. Step 1: Write the proportion equation
   42,391.72 : 58,516.28 = 36,399.32 : x
2. Step 2: Convert to fraction form
   42,391.72/58,516.28 = 36,399.32/x
3. Step 3: Cross multiply
   42,391.72x = 58,516.28 × 36,399.32
4. Step 4: Simplify right side
   42,391.72x = 2,129,952,800.93
5. Step 5: Solve for x
   x = 2,129,952,800.93/42,391.72
6. Step 6: Final answer
   x = 50,244.55