Finding the Fourth Proportional to 123,631.94, 185,295.90 and 56,979.56

Step by Step Solution

1. Step 1: Write the proportion equation
   123,631.94 : 185,295.90 = 56,979.56 : x
2. Step 2: Convert to fraction form
   123,631.94/185,295.90 = 56,979.56/x
3. Step 3: Cross multiply
   123,631.94x = 185,295.90 × 56,979.56
4. Step 4: Simplify right side
   123,631.94x = 10,558,078,851.80
5. Step 5: Solve for x
   x = 10,558,078,851.80/123,631.94
6. Step 6: Final answer
   x = 85,399.28