Finding the Fourth Proportional to 75,139.72, 103,692.90 and 41,605

Step by Step Solution

1. Step 1: Write the proportion equation
   75,139.72 : 103,692.90 = 41,605 : x
2. Step 2: Convert to fraction form
   75,139.72/103,692.90 = 41,605/x
3. Step 3: Cross multiply
   75,139.72x = 103,692.90 × 41,605
4. Step 4: Simplify right side
   75,139.72x = 4,314,143,104.50
5. Step 5: Solve for x
   x = 4,314,143,104.50/75,139.72
6. Step 6: Final answer
   x = 57,414.95