Finding the Fourth Proportional to 42,464.08, 58,616.76 and 28,311.76

Step by Step Solution

1. Step 1: Write the proportion equation
   42,464.08 : 58,616.76 = 28,311.76 : x
2. Step 2: Convert to fraction form
   42,464.08/58,616.76 = 28,311.76/x
3. Step 3: Cross multiply
   42,464.08x = 58,616.76 × 28,311.76
4. Step 4: Simplify right side
   42,464.08x = 1,659,543,641.10
5. Step 5: Solve for x
   x = 1,659,543,641.10/42,464.08
6. Step 6: Final answer
   x = 39,081.12