Finding the Fourth Proportional to 105,144.87, 145,087.16 and 59,828.61

Step by Step Solution

1. Step 1: Write the proportion equation
   105,144.87 : 145,087.16 = 59,828.61 : x
2. Step 2: Convert to fraction form
   105,144.87/145,087.16 = 59,828.61/x
3. Step 3: Cross multiply
   105,144.87x = 145,087.16 × 59,828.61
4. Step 4: Simplify right side
   105,144.87x = 8,680,362,812.50
5. Step 5: Solve for x
   x = 8,680,362,812.50/105,144.87
6. Step 6: Final answer
   x = 82,556.22