Finding the Fourth Proportional to 105,742.18, 145,924.37 and 57,995.81

Step by Step Solution

1. Step 1: Write the proportion equation
   105,742.18 : 145,924.37 = 57,995.81 : x
2. Step 2: Convert to fraction form
   105,742.18/145,924.37 = 57,995.81/x
3. Step 3: Cross multiply
   105,742.18x = 145,924.37 × 57,995.81
4. Step 4: Simplify right side
   105,742.18x = 8,463,002,036.89
5. Step 5: Solve for x
   x = 8,463,002,036.89/105,742.18
6. Step 6: Final answer
   x = 80,034.31