Finding the Fourth Proportional to 105,021.82, 144,928.58 and 57,275.06

Step by Step Solution

1. Step 1: Write the proportion equation
   105,021.82 : 144,928.58 = 57,275.06 : x
2. Step 2: Convert to fraction form
   105,021.82/144,928.58 = 57,275.06/x
3. Step 3: Cross multiply
   105,021.82x = 144,928.58 × 57,275.06
4. Step 4: Simplify right side
   105,021.82x = 8,300,793,115.21
5. Step 5: Solve for x
   x = 8,300,793,115.21/105,021.82
6. Step 6: Final answer
   x = 79,038.75