Finding the Fourth Proportional to 42,142.79, 63,223.42 and 15,847.54

Step by Step Solution

1. Step 1: Write the proportion equation
   42,142.79 : 63,223.42 = 15,847.54 : x
2. Step 2: Convert to fraction form
   42,142.79/63,223.42 = 15,847.54/x
3. Step 3: Cross multiply
   42,142.79x = 63,223.42 × 15,847.54
4. Step 4: Simplify right side
   42,142.79x = 1,001,935,677.39
5. Step 5: Solve for x
   x = 1,001,935,677.39/42,142.79
6. Step 6: Final answer
   x = 23,774.78