Finding the Fourth Proportional to 37,879.18, 56,835.17 and 20,328.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,879.18 : 56,835.17 = 20,328.50 : x
2. Step 2: Convert to fraction form
   37,879.18/56,835.17 = 20,328.50/x
3. Step 3: Cross multiply
   37,879.18x = 56,835.17 × 20,328.50
4. Step 4: Simplify right side
   37,879.18x = 1,155,373,870.02
5. Step 5: Solve for x
   x = 1,155,373,870.02/37,879.18
6. Step 6: Final answer
   x = 30,501.56