Finding the Fourth Proportional to 37,085.50, 51,178.02 and 20,318.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,085.50 : 51,178.02 = 20,318.50 : x
2. Step 2: Convert to fraction form
   37,085.50/51,178.02 = 20,318.50/x
3. Step 3: Cross multiply
   37,085.50x = 51,178.02 × 20,318.50
4. Step 4: Simplify right side
   37,085.50x = 1,039,860,599.37
5. Step 5: Solve for x
   x = 1,039,860,599.37/37,085.50
6. Step 6: Final answer
   x = 28,039.55