Finding the Fourth Proportional to 42,833.67, 64,213.56 and 20,662.62

Step by Step Solution

1. Step 1: Write the proportion equation
   42,833.67 : 64,213.56 = 20,662.62 : x
2. Step 2: Convert to fraction form
   42,833.67/64,213.56 = 20,662.62/x
3. Step 3: Cross multiply
   42,833.67x = 64,213.56 × 20,662.62
4. Step 4: Simplify right side
   42,833.67x = 1,326,820,389.13
5. Step 5: Solve for x
   x = 1,326,820,389.13/42,833.67
6. Step 6: Final answer
   x = 30,976.11