Finding the Fourth Proportional to 48,057.08, 72,111.46 and 19,996.50

Step by Step Solution

1. Step 1: Write the proportion equation
   48,057.08 : 72,111.46 = 19,996.50 : x
2. Step 2: Convert to fraction form
   48,057.08/72,111.46 = 19,996.50/x
3. Step 3: Cross multiply
   48,057.08x = 72,111.46 × 19,996.50
4. Step 4: Simplify right side
   48,057.08x = 1,441,976,809.89
5. Step 5: Solve for x
   x = 1,441,976,809.89/48,057.08
6. Step 6: Final answer
   x = 30,005.50