Finding the Fourth Proportional to 82,728, 124,116.48 and 47,692.80

Step by Step Solution

1. Step 1: Write the proportion equation
   82,728 : 124,116.48 = 47,692.80 : x
2. Step 2: Convert to fraction form
   82,728/124,116.48 = 47,692.80/x
3. Step 3: Cross multiply
   82,728x = 124,116.48 × 47,692.80
4. Step 4: Simplify right side
   82,728x = 5,919,462,457.34
5. Step 5: Solve for x
   x = 5,919,462,457.34/82,728
6. Step 6: Final answer
   x = 71,553.31