Finding the Fourth Proportional to 123,412.98, 170,328.09 and 72,453.82

Step by Step Solution

1. Step 1: Write the proportion equation
   123,412.98 : 170,328.09 = 72,453.82 : x
2. Step 2: Convert to fraction form
   123,412.98/170,328.09 = 72,453.82/x
3. Step 3: Cross multiply
   123,412.98x = 170,328.09 × 72,453.82
4. Step 4: Simplify right side
   123,412.98x = 12,340,920,347.98
5. Step 5: Solve for x
   x = 12,340,920,347.98/123,412.98
6. Step 6: Final answer
   x = 99,996.94