Finding the Fourth Proportional to 57,796.18, 86,719.32 and 20,383

Step by Step Solution

1. Step 1: Write the proportion equation
   57,796.18 : 86,719.32 = 20,383 : x
2. Step 2: Convert to fraction form
   57,796.18/86,719.32 = 20,383/x
3. Step 3: Cross multiply
   57,796.18x = 86,719.32 × 20,383
4. Step 4: Simplify right side
   57,796.18x = 1,767,599,899.56
5. Step 5: Solve for x
   x = 1,767,599,899.56/57,796.18
6. Step 6: Final answer
   x = 30,583.33