Finding the Fourth Proportional to 190,196.71, 262,468.25 and 105,311.95

Step by Step Solution

1. Step 1: Write the proportion equation
   190,196.71 : 262,468.25 = 105,311.95 : x
2. Step 2: Convert to fraction form
   190,196.71/262,468.25 = 105,311.95/x
3. Step 3: Cross multiply
   190,196.71x = 262,468.25 × 105,311.95
4. Step 4: Simplify right side
   190,196.71x = 27,641,042,432.78
5. Step 5: Solve for x
   x = 27,641,042,432.78/190,196.71
6. Step 6: Final answer
   x = 145,328.71