Finding the Fourth Proportional to 195,066.50, 269,191.77 and 105,642.50

Step by Step Solution

1. Step 1: Write the proportion equation
   195,066.50 : 269,191.77 = 105,642.50 : x
2. Step 2: Convert to fraction form
   195,066.50/269,191.77 = 105,642.50/x
3. Step 3: Cross multiply
   195,066.50x = 269,191.77 × 105,642.50
4. Step 4: Simplify right side
   195,066.50x = 28,438,091,562.23
5. Step 5: Solve for x
   x = 28,438,091,562.23/195,066.50
6. Step 6: Final answer
   x = 145,786.65