Finding the Fourth Proportional to 83,440.56, 124,942.12 and 57,196.56

Step by Step Solution

1. Step 1: Write the proportion equation
   83,440.56 : 124,942.12 = 57,196.56 : x
2. Step 2: Convert to fraction form
   83,440.56/124,942.12 = 57,196.56/x
3. Step 3: Cross multiply
   83,440.56x = 124,942.12 × 57,196.56
4. Step 4: Simplify right side
   83,440.56x = 7,146,259,320.12
5. Step 5: Solve for x
   x = 7,146,259,320.12/83,440.56
6. Step 6: Final answer
   x = 85,644.91