Finding the Fourth Proportional to 57,868, 79,858.32 and 31,372

Step by Step Solution

1. Step 1: Write the proportion equation
   57,868 : 79,858.32 = 31,372 : x
2. Step 2: Convert to fraction form
   57,868/79,858.32 = 31,372/x
3. Step 3: Cross multiply
   57,868x = 79,858.32 × 31,372
4. Step 4: Simplify right side
   57,868x = 2,505,315,215.04
5. Step 5: Solve for x
   x = 2,505,315,215.04/57,868
6. Step 6: Final answer
   x = 43,293.62