Finding the Fourth Proportional to 105,145.12, 145,087.50 and 59,828.86

Step by Step Solution

1. Step 1: Write the proportion equation
   105,145.12 : 145,087.50 = 59,828.86 : x
2. Step 2: Convert to fraction form
   105,145.12/145,087.50 = 59,828.86/x
3. Step 3: Cross multiply
   105,145.12x = 145,087.50 × 59,828.86
4. Step 4: Simplify right side
   105,145.12x = 8,680,419,725.25
5. Step 5: Solve for x
   x = 8,680,419,725.25/105,145.12
6. Step 6: Final answer
   x = 82,556.56