Finding the Fourth Proportional to 123,755.76, 185,603.82 and 57,131.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123,755.76 : 185,603.82 = 57,131.88 : x
2. Step 2: Convert to fraction form
   123,755.76/185,603.82 = 57,131.88/x
3. Step 3: Cross multiply
   123,755.76x = 185,603.82 × 57,131.88
4. Step 4: Simplify right side
   123,755.76x = 10,603,895,171.78
5. Step 5: Solve for x
   x = 10,603,895,171.78/123,755.76
6. Step 6: Final answer
   x = 85,684.05