Finding the Fourth Proportional to 42,265.31, 63,404.14 and 12,685.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,265.31 : 63,404.14 = 12,685.48 : x
2. Step 2: Convert to fraction form
   42,265.31/63,404.14 = 12,685.48/x
3. Step 3: Cross multiply
   42,265.31x = 63,404.14 × 12,685.48
4. Step 4: Simplify right side
   42,265.31x = 804,311,949.89
5. Step 5: Solve for x
   x = 804,311,949.89/42,265.31
6. Step 6: Final answer
   x = 19,030.08