Finding the Fourth Proportional to 105,757, 145,950.42 and 61,059.40

Step by Step Solution

1. Step 1: Write the proportion equation
   105,757 : 145,950.42 = 61,059.40 : x
2. Step 2: Convert to fraction form
   105,757/145,950.42 = 61,059.40/x
3. Step 3: Cross multiply
   105,757x = 145,950.42 × 61,059.40
4. Step 4: Simplify right side
   105,757x = 8,911,645,074.95
5. Step 5: Solve for x
   x = 8,911,645,074.95/105,757
6. Step 6: Final answer
   x = 84,265.30