Finding the Fourth Proportional to 42,460.04, 63,699.32 and 12,880.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42,460.04 : 63,699.32 = 12,880.18 : x
2. Step 2: Convert to fraction form
   42,460.04/63,699.32 = 12,880.18/x
3. Step 3: Cross multiply
   42,460.04x = 63,699.32 × 12,880.18
4. Step 4: Simplify right side
   42,460.04x = 820,458,707.48
5. Step 5: Solve for x
   x = 820,458,707.48/42,460.04
6. Step 6: Final answer
   x = 19,323.08