Finding the Fourth Proportional to 42,042.42, 63,072.86 and 12,462.58

Step by Step Solution

1. Step 1: Write the proportion equation
   42,042.42 : 63,072.86 = 12,462.58 : x
2. Step 2: Convert to fraction form
   42,042.42/63,072.86 = 12,462.58/x
3. Step 3: Cross multiply
   42,042.42x = 63,072.86 × 12,462.58
4. Step 4: Simplify right side
   42,042.42x = 786,050,563.58
5. Step 5: Solve for x
   x = 786,050,563.58/42,042.42
6. Step 6: Final answer
   x = 18,696.61