Finding the Fourth Proportional to 105,209.33, 145,092.72 and 82,242.19

Step by Step Solution

1. Step 1: Write the proportion equation
   105,209.33 : 145,092.72 = 82,242.19 : x
2. Step 2: Convert to fraction form
   105,209.33/145,092.72 = 82,242.19/x
3. Step 3: Cross multiply
   105,209.33x = 145,092.72 × 82,242.19
4. Step 4: Simplify right side
   105,209.33x = 11,932,742,683.13
5. Step 5: Solve for x
   x = 11,932,742,683.13/105,209.33
6. Step 6: Final answer
   x = 113,419.05