Finding the Fourth Proportional to 81,984.18, 122,983.56 and 42,530.70

Step by Step Solution

1. Step 1: Write the proportion equation
   81,984.18 : 122,983.56 = 42,530.70 : x
2. Step 2: Convert to fraction form
   81,984.18/122,983.56 = 42,530.70/x
3. Step 3: Cross multiply
   81,984.18x = 122,983.56 × 42,530.70
4. Step 4: Simplify right side
   81,984.18x = 5,230,576,895.29
5. Step 5: Solve for x
   x = 5,230,576,895.29/81,984.18
6. Step 6: Final answer
   x = 63,799.83