Finding the Fourth Proportional to 105,495.71, 145,584.48 and 57,753.50

Step by Step Solution

1. Step 1: Write the proportion equation
   105,495.71 : 145,584.48 = 57,753.50 : x
2. Step 2: Convert to fraction form
   105,495.71/145,584.48 = 57,753.50/x
3. Step 3: Cross multiply
   105,495.71x = 145,584.48 × 57,753.50
4. Step 4: Simplify right side
   105,495.71x = 8,408,012,976.91
5. Step 5: Solve for x
   x = 8,408,012,976.91/105,495.71
6. Step 6: Final answer
   x = 79,700.05