Finding the Fourth Proportional to 105,834.65, 146,051.37 and 57,435.53

Step by Step Solution

1. Step 1: Write the proportion equation
   105,834.65 : 146,051.37 = 57,435.53 : x
2. Step 2: Convert to fraction form
   105,834.65/146,051.37 = 57,435.53/x
3. Step 3: Cross multiply
   105,834.65x = 146,051.37 × 57,435.53
4. Step 4: Simplify right side
   105,834.65x = 8,388,537,112.92
5. Step 5: Solve for x
   x = 8,388,537,112.92/105,834.65
6. Step 6: Final answer
   x = 79,260.79