Finding the Fourth Proportional to 82,779.67, 123,482.24 and 80,012.20

Step by Step Solution

1. Step 1: Write the proportion equation
   82,779.67 : 123,482.24 = 80,012.20 : x
2. Step 2: Convert to fraction form
   82,779.67/123,482.24 = 80,012.20/x
3. Step 3: Cross multiply
   82,779.67x = 123,482.24 × 80,012.20
4. Step 4: Simplify right side
   82,779.67x = 9,880,085,683.33
5. Step 5: Solve for x
   x = 9,880,085,683.33/82,779.67
6. Step 6: Final answer
   x = 119,354.01