Finding the Fourth Proportional to 123,866.98, 170,907.15 and 72,881.94

Step by Step Solution

1. Step 1: Write the proportion equation
   123,866.98 : 170,907.15 = 72,881.94 : x
2. Step 2: Convert to fraction form
   123,866.98/170,907.15 = 72,881.94/x
3. Step 3: Cross multiply
   123,866.98x = 170,907.15 × 72,881.94
4. Step 4: Simplify right side
   123,866.98x = 12,456,044,651.87
5. Step 5: Solve for x
   x = 12,456,044,651.87/123,866.98
6. Step 6: Final answer
   x = 100,559.85