Finding the Fourth Proportional to 57,897.31, 79,898.29 and 31,401.31

Step by Step Solution

1. Step 1: Write the proportion equation
   57,897.31 : 79,898.29 = 31,401.31 : x
2. Step 2: Convert to fraction form
   57,897.31/79,898.29 = 31,401.31/x
3. Step 3: Cross multiply
   57,897.31x = 79,898.29 × 31,401.31
4. Step 4: Simplify right side
   57,897.31x = 2,508,910,972.76
5. Step 5: Solve for x
   x = 2,508,910,972.76/57,897.31
6. Step 6: Final answer
   x = 43,333.81