Finding the Fourth Proportional to 123,503.94, 170,443.89 and 75,124.80

Step by Step Solution

1. Step 1: Write the proportion equation
   123,503.94 : 170,443.89 = 75,124.80 : x
2. Step 2: Convert to fraction form
   123,503.94/170,443.89 = 75,124.80/x
3. Step 3: Cross multiply
   123,503.94x = 170,443.89 × 75,124.80
4. Step 4: Simplify right side
   123,503.94x = 12,804,563,147.47
5. Step 5: Solve for x
   x = 12,804,563,147.47/123,503.94
6. Step 6: Final answer
   x = 103,677.37