Finding the Fourth Proportional to 123,786.12, 185,649.42 and 57,162.24

Step by Step Solution

1. Step 1: Write the proportion equation
   123,786.12 : 185,649.42 = 57,162.24 : x
2. Step 2: Convert to fraction form
   123,786.12/185,649.42 = 57,162.24/x
3. Step 3: Cross multiply
   123,786.12x = 185,649.42 × 57,162.24
4. Step 4: Simplify right side
   123,786.12x = 10,612,136,701.90
5. Step 5: Solve for x
   x = 10,612,136,701.90/123,786.12
6. Step 6: Final answer
   x = 85,729.62