Finding the Fourth Proportional to 105,022.10, 145,051.49 and 76,469.47

Step by Step Solution

1. Step 1: Write the proportion equation
   105,022.10 : 145,051.49 = 76,469.47 : x
2. Step 2: Convert to fraction form
   105,022.10/145,051.49 = 76,469.47/x
3. Step 3: Cross multiply
   105,022.10x = 145,051.49 × 76,469.47
4. Step 4: Simplify right side
   105,022.10x = 11,092,010,391.56
5. Step 5: Solve for x
   x = 11,092,010,391.56/105,022.10
6. Step 6: Final answer
   x = 105,615.96