Finding the Fourth Proportional to 105,673.42, 145,835.27 and 62,678.42

Step by Step Solution

1. Step 1: Write the proportion equation
   105,673.42 : 145,835.27 = 62,678.42 : x
2. Step 2: Convert to fraction form
   105,673.42/145,835.27 = 62,678.42/x
3. Step 3: Cross multiply
   105,673.42x = 145,835.27 × 62,678.42
4. Step 4: Simplify right side
   105,673.42x = 9,140,724,043.23
5. Step 5: Solve for x
   x = 9,140,724,043.23/105,673.42
6. Step 6: Final answer
   x = 86,499.75