Finding the Fourth Proportional to 123,379.61, 170,291.97 and 80,283.15

Step by Step Solution

1. Step 1: Write the proportion equation
   123,379.61 : 170,291.97 = 80,283.15 : x
2. Step 2: Convert to fraction form
   123,379.61/170,291.97 = 80,283.15/x
3. Step 3: Cross multiply
   123,379.61x = 170,291.97 × 80,283.15
4. Step 4: Simplify right side
   123,379.61x = 13,671,575,771.31
5. Step 5: Solve for x
   x = 13,671,575,771.31/123,379.61
6. Step 6: Final answer
   x = 110,809.04