Finding the Fourth Proportional to 105,762.28, 146,103.78 and 84,513.64

Step by Step Solution

1. Step 1: Write the proportion equation
   105,762.28 : 146,103.78 = 84,513.64 : x
2. Step 2: Convert to fraction form
   105,762.28/146,103.78 = 84,513.64/x
3. Step 3: Cross multiply
   105,762.28x = 146,103.78 × 84,513.64
4. Step 4: Simplify right side
   105,762.28x = 12,347,762,265.56
5. Step 5: Solve for x
   x = 12,347,762,265.56/105,762.28
6. Step 6: Final answer
   x = 116,750.15