Finding the Fourth Proportional to 42,086.15, 58,155.86 and 40,036.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,086.15 : 58,155.86 = 40,036.04 : x
2. Step 2: Convert to fraction form
   42,086.15/58,155.86 = 40,036.04/x
3. Step 3: Cross multiply
   42,086.15x = 58,155.86 × 40,036.04
4. Step 4: Simplify right side
   42,086.15x = 2,328,330,337.19
5. Step 5: Solve for x
   x = 2,328,330,337.19/42,086.15
6. Step 6: Final answer
   x = 55,322.96