Finding the Fourth Proportional to 82,605.80, 123,870 and 48,421.98

Step by Step Solution

1. Step 1: Write the proportion equation
   82,605.80 : 123,870 = 48,421.98 : x
2. Step 2: Convert to fraction form
   82,605.80/123,870 = 48,421.98/x
3. Step 3: Cross multiply
   82,605.80x = 123,870 × 48,421.98
4. Step 4: Simplify right side
   82,605.80x = 5,998,030,662.60
5. Step 5: Solve for x
   x = 5,998,030,662.60/82,605.80
6. Step 6: Final answer
   x = 72,610.28