Finding the Fourth Proportional to 83,105.80, 124,658.70 and 83,105.80

Step by Step Solution

1. Step 1: Write the proportion equation
   83,105.80 : 124,658.70 = 83,105.80 : x
2. Step 2: Convert to fraction form
   83,105.80/124,658.70 = 83,105.80/x
3. Step 3: Cross multiply
   83,105.80x = 124,658.70 × 83,105.80
4. Step 4: Simplify right side
   83,105.80x = 10,359,860,990.46
5. Step 5: Solve for x
   x = 10,359,860,990.46/83,105.80
6. Step 6: Final answer
   x = 124,658.70