Finding the Fourth Proportional to 42,069.38, 63,115.23 and 12,487.46

Step by Step Solution

1. Step 1: Write the proportion equation
   42,069.38 : 63,115.23 = 12,487.46 : x
2. Step 2: Convert to fraction form
   42,069.38/63,115.23 = 12,487.46/x
3. Step 3: Cross multiply
   42,069.38x = 63,115.23 × 12,487.46
4. Step 4: Simplify right side
   42,069.38x = 788,148,910.02
5. Step 5: Solve for x
   x = 788,148,910.02/42,069.38
6. Step 6: Final answer
   x = 18,734.50