Finding the Fourth Proportional to 190,406.30, 262,760.69 and 105,528.83

Step by Step Solution

1. Step 1: Write the proportion equation
   190,406.30 : 262,760.69 = 105,528.83 : x
2. Step 2: Convert to fraction form
   190,406.30/262,760.69 = 105,528.83/x
3. Step 3: Cross multiply
   190,406.30x = 262,760.69 × 105,528.83
4. Step 4: Simplify right side
   190,406.30x = 27,728,829,106.42
5. Step 5: Solve for x
   x = 27,728,829,106.42/190,406.30
6. Step 6: Final answer
   x = 145,629.79