Finding the Fourth Proportional to 49,736.63, 74,581.56 and 20,131.94

Step by Step Solution

1. Step 1: Write the proportion equation
   49,736.63 : 74,581.56 = 20,131.94 : x
2. Step 2: Convert to fraction form
   49,736.63/74,581.56 = 20,131.94/x
3. Step 3: Cross multiply
   49,736.63x = 74,581.56 × 20,131.94
4. Step 4: Simplify right side
   49,736.63x = 1,501,471,677.48
5. Step 5: Solve for x
   x = 1,501,471,677.48/49,736.63
6. Step 6: Final answer
   x = 30,188.45