Finding the Fourth Proportional to 76,162.97, 105,108.17 and 42,171.45

Step by Step Solution

1. Step 1: Write the proportion equation
   76,162.97 : 105,108.17 = 42,171.45 : x
2. Step 2: Convert to fraction form
   76,162.97/105,108.17 = 42,171.45/x
3. Step 3: Cross multiply
   76,162.97x = 105,108.17 × 42,171.45
4. Step 4: Simplify right side
   76,162.97x = 4,432,563,724.89
5. Step 5: Solve for x
   x = 4,432,563,724.89/76,162.97
6. Step 6: Final answer
   x = 58,198.41