Finding the Fourth Proportional to 190,111.56, 262,326.48 and 105,228.42

Step by Step Solution

1. Step 1: Write the proportion equation
   190,111.56 : 262,326.48 = 105,228.42 : x
2. Step 2: Convert to fraction form
   190,111.56/262,326.48 = 105,228.42/x
3. Step 3: Cross multiply
   190,111.56x = 262,326.48 × 105,228.42
4. Step 4: Simplify right side
   190,111.56x = 27,604,201,014.56
5. Step 5: Solve for x
   x = 27,604,201,014.56/190,111.56
6. Step 6: Final answer
   x = 145,200.01