Finding the Fourth Proportional to 42,167.76, 63,262.59 and 12,585.59

Step by Step Solution

1. Step 1: Write the proportion equation
   42,167.76 : 63,262.59 = 12,585.59 : x
2. Step 2: Convert to fraction form
   42,167.76/63,262.59 = 12,585.59/x
3. Step 3: Cross multiply
   42,167.76x = 63,262.59 × 12,585.59
4. Step 4: Simplify right side
   42,167.76x = 796,197,020.08
5. Step 5: Solve for x
   x = 796,197,020.08/42,167.76
6. Step 6: Final answer
   x = 18,881.65