Finding the Fourth Proportional to 42,262.34, 63,404.04 and 12,680.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,262.34 : 63,404.04 = 12,680.72 : x
2. Step 2: Convert to fraction form
   42,262.34/63,404.04 = 12,680.72/x
3. Step 3: Cross multiply
   42,262.34x = 63,404.04 × 12,680.72
4. Step 4: Simplify right side
   42,262.34x = 804,008,561.09
5. Step 5: Solve for x
   x = 804,008,561.09/42,262.34
6. Step 6: Final answer
   x = 19,024.23