Finding the Fourth Proportional to 83,998.80, 126,775.98 and 83,998.80

Step by Step Solution

1. Step 1: Write the proportion equation
   83,998.80 : 126,775.98 = 83,998.80 : x
2. Step 2: Convert to fraction form
   83,998.80/126,775.98 = 83,998.80/x
3. Step 3: Cross multiply
   83,998.80x = 126,775.98 × 83,998.80
4. Step 4: Simplify right side
   83,998.80x = 10,649,030,188.82
5. Step 5: Solve for x
   x = 10,649,030,188.82/83,998.80
6. Step 6: Final answer
   x = 126,775.98