Finding the Fourth Proportional to 194,978.25, 269,069.99 and 105,554.25

Step by Step Solution

1. Step 1: Write the proportion equation
   194,978.25 : 269,069.99 = 105,554.25 : x
2. Step 2: Convert to fraction form
   194,978.25/269,069.99 = 105,554.25/x
3. Step 3: Cross multiply
   194,978.25x = 269,069.99 × 105,554.25
4. Step 4: Simplify right side
   194,978.25x = 28,401,480,464.19
5. Step 5: Solve for x
   x = 28,401,480,464.19/194,978.25
6. Step 6: Final answer
   x = 145,664.87