Finding the Fourth Proportional to 71,638.72, 107,457.98 and 19,048.24

Step by Step Solution

1. Step 1: Write the proportion equation
   71,638.72 : 107,457.98 = 19,048.24 : x
2. Step 2: Convert to fraction form
   71,638.72/107,457.98 = 19,048.24/x
3. Step 3: Cross multiply
   71,638.72x = 107,457.98 × 19,048.24
4. Step 4: Simplify right side
   71,638.72x = 2,046,885,392.96
5. Step 5: Solve for x
   x = 2,046,885,392.96/71,638.72
6. Step 6: Final answer
   x = 28,572.33