Finding the Fourth Proportional to 105,269.22, 145,272.54 and 57,522.56

Step by Step Solution

1. Step 1: Write the proportion equation
   105,269.22 : 145,272.54 = 57,522.56 : x
2. Step 2: Convert to fraction form
   105,269.22/145,272.54 = 57,522.56/x
3. Step 3: Cross multiply
   105,269.22x = 145,272.54 × 57,522.56
4. Step 4: Simplify right side
   105,269.22x = 8,356,448,398.50
5. Step 5: Solve for x
   x = 8,356,448,398.50/105,269.22
6. Step 6: Final answer
   x = 79,381.69