Finding the Fourth Proportional to 82,748.49, 124,122.78 and 57,837.17

Step by Step Solution

1. Step 1: Write the proportion equation
   82,748.49 : 124,122.78 = 57,837.17 : x
2. Step 2: Convert to fraction form
   82,748.49/124,122.78 = 57,837.17/x
3. Step 3: Cross multiply
   82,748.49x = 124,122.78 × 57,837.17
4. Step 4: Simplify right side
   82,748.49x = 7,178,910,638.04
5. Step 5: Solve for x
   x = 7,178,910,638.04/82,748.49
6. Step 6: Final answer
   x = 86,755.79