Finding the Fourth Proportional to 30,562.79, 42,185.61 and 19,954.04

Step by Step Solution

1. Step 1: Write the proportion equation
   30,562.79 : 42,185.61 = 19,954.04 : x
2. Step 2: Convert to fraction form
   30,562.79/42,185.61 = 19,954.04/x
3. Step 3: Cross multiply
   30,562.79x = 42,185.61 × 19,954.04
4. Step 4: Simplify right side
   30,562.79x = 841,773,138.44
5. Step 5: Solve for x
   x = 841,773,138.44/30,562.79
6. Step 6: Final answer
   x = 27,542.42