Finding the Fourth Proportional to 49,648.34, 74,525.56 and 20,085.50

Step by Step Solution

1. Step 1: Write the proportion equation
   49,648.34 : 74,525.56 = 20,085.50 : x
2. Step 2: Convert to fraction form
   49,648.34/74,525.56 = 20,085.50/x
3. Step 3: Cross multiply
   49,648.34x = 74,525.56 × 20,085.50
4. Step 4: Simplify right side
   49,648.34x = 1,496,882,762.75
5. Step 5: Solve for x
   x = 1,496,882,762.75/49,648.34
6. Step 6: Final answer
   x = 30,149.71