Finding the Fourth Proportional to 42,155.46, 58,072.86 and 36,086.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,155.46 : 58,072.86 = 36,086.40 : x
2. Step 2: Convert to fraction form
   42,155.46/58,072.86 = 36,086.40/x
3. Step 3: Cross multiply
   42,155.46x = 58,072.86 × 36,086.40
4. Step 4: Simplify right side
   42,155.46x = 2,095,640,455.10
5. Step 5: Solve for x
   x = 2,095,640,455.10/42,155.46
6. Step 6: Final answer
   x = 49,712.20