Finding the Fourth Proportional to 42,314.48, 63,469.32 and 12,731.68

Step by Step Solution

1. Step 1: Write the proportion equation
   42,314.48 : 63,469.32 = 12,731.68 : x
2. Step 2: Convert to fraction form
   42,314.48/63,469.32 = 12,731.68/x
3. Step 3: Cross multiply
   42,314.48x = 63,469.32 × 12,731.68
4. Step 4: Simplify right side
   42,314.48x = 808,071,072.06
5. Step 5: Solve for x
   x = 808,071,072.06/42,314.48
6. Step 6: Final answer
   x = 19,096.80