Finding the Fourth Proportional to 105,300.87, 145,315.17 and 59,983.05

Step by Step Solution

1. Step 1: Write the proportion equation
   105,300.87 : 145,315.17 = 59,983.05 : x
2. Step 2: Convert to fraction form
   105,300.87/145,315.17 = 59,983.05/x
3. Step 3: Cross multiply
   105,300.87x = 145,315.17 × 59,983.05
4. Step 4: Simplify right side
   105,300.87x = 8,716,447,107.87
5. Step 5: Solve for x
   x = 8,716,447,107.87/105,300.87
6. Step 6: Final answer
   x = 82,776.59