Finding the Fourth Proportional to 123,765.37, 185,618.34 and 57,141.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,765.37 : 185,618.34 = 57,141.50 : x
2. Step 2: Convert to fraction form
   123,765.37/185,618.34 = 57,141.50/x
3. Step 3: Cross multiply
   123,765.37x = 185,618.34 × 57,141.50
4. Step 4: Simplify right side
   123,765.37x = 10,606,509,447.02
5. Step 5: Solve for x
   x = 10,606,509,447.02/123,765.37
6. Step 6: Final answer
   x = 85,698.53