Finding the Fourth Proportional to 74,243.16, 111,342.78 and 21,636.18

Step by Step Solution

1. Step 1: Write the proportion equation
   74,243.16 : 111,342.78 = 21,636.18 : x
2. Step 2: Convert to fraction form
   74,243.16/111,342.78 = 21,636.18/x
3. Step 3: Cross multiply
   74,243.16x = 111,342.78 × 21,636.18
4. Step 4: Simplify right side
   74,243.16x = 2,409,032,429.78
5. Step 5: Solve for x
   x = 2,409,032,429.78/74,243.16
6. Step 6: Final answer
   x = 32,447.87