Finding the Fourth Proportional to 105,890.77, 146,131.82 and 57,494.76

Step by Step Solution

1. Step 1: Write the proportion equation
   105,890.77 : 146,131.82 = 57,494.76 : x
2. Step 2: Convert to fraction form
   105,890.77/146,131.82 = 57,494.76/x
3. Step 3: Cross multiply
   105,890.77x = 146,131.82 × 57,494.76
4. Step 4: Simplify right side
   105,890.77x = 8,401,813,919.26
5. Step 5: Solve for x
   x = 8,401,813,919.26/105,890.77
6. Step 6: Final answer
   x = 79,344.16