Finding the Fourth Proportional to 49,131.53, 73,635.62 and 21,018.52

Step by Step Solution

1. Step 1: Write the proportion equation
   49,131.53 : 73,635.62 = 21,018.52 : x
2. Step 2: Convert to fraction form
   49,131.53/73,635.62 = 21,018.52/x
3. Step 3: Cross multiply
   49,131.53x = 73,635.62 × 21,018.52
4. Step 4: Simplify right side
   49,131.53x = 1,547,711,383.50
5. Step 5: Solve for x
   x = 1,547,711,383.50/49,131.53
6. Step 6: Final answer
   x = 31,501.39