Finding the Fourth Proportional to 105,038.31, 144,954.68 and 57,293.31

Step by Step Solution

1. Step 1: Write the proportion equation
   105,038.31 : 144,954.68 = 57,293.31 : x
2. Step 2: Convert to fraction form
   105,038.31/144,954.68 = 57,293.31/x
3. Step 3: Cross multiply
   105,038.31x = 144,954.68 × 57,293.31
4. Step 4: Simplify right side
   105,038.31x = 8,304,933,130.72
5. Step 5: Solve for x
   x = 8,304,933,130.72/105,038.31
6. Step 6: Final answer
   x = 79,065.75