Finding the Fourth Proportional to 76,150.44, 105,087.78 and 42,161.31

Step by Step Solution

1. Step 1: Write the proportion equation
   76,150.44 : 105,087.78 = 42,161.31 : x
2. Step 2: Convert to fraction form
   76,150.44/105,087.78 = 42,161.31/x
3. Step 3: Cross multiply
   76,150.44x = 105,087.78 × 42,161.31
4. Step 4: Simplify right side
   76,150.44x = 4,430,638,469.79
5. Step 5: Solve for x
   x = 4,430,638,469.79/76,150.44
6. Step 6: Final answer
   x = 58,182.70