Finding the Fourth Proportional to 105,282.86, 145,290.43 and 57,536.22

Step by Step Solution

1. Step 1: Write the proportion equation
   105,282.86 : 145,290.43 = 57,536.22 : x
2. Step 2: Convert to fraction form
   105,282.86/145,290.43 = 57,536.22/x
3. Step 3: Cross multiply
   105,282.86x = 145,290.43 × 57,536.22
4. Step 4: Simplify right side
   105,282.86x = 8,359,462,922.95
5. Step 5: Solve for x
   x = 8,359,462,922.95/105,282.86
6. Step 6: Final answer
   x = 79,400.03