Finding the Fourth Proportional to 105,050.69, 144,969.43 and 57,303.62

Step by Step Solution

1. Step 1: Write the proportion equation
   105,050.69 : 144,969.43 = 57,303.62 : x
2. Step 2: Convert to fraction form
   105,050.69/144,969.43 = 57,303.62/x
3. Step 3: Cross multiply
   105,050.69x = 144,969.43 × 57,303.62
4. Step 4: Simplify right side
   105,050.69x = 8,307,273,128.34
5. Step 5: Solve for x
   x = 8,307,273,128.34/105,050.69
6. Step 6: Final answer
   x = 79,078.71