Finding the Fourth Proportional to 71,050.72, 106,582.56 and 21,130.42

Step by Step Solution

1. Step 1: Write the proportion equation
   71,050.72 : 106,582.56 = 21,130.42 : x
2. Step 2: Convert to fraction form
   71,050.72/106,582.56 = 21,130.42/x
3. Step 3: Cross multiply
   71,050.72x = 106,582.56 × 21,130.42
4. Step 4: Simplify right side
   71,050.72x = 2,252,134,257.48
5. Step 5: Solve for x
   x = 2,252,134,257.48/71,050.72
6. Step 6: Final answer
   x = 31,697.56