Finding the Fourth Proportional to 42,047.85, 63,072.03 and 12,465.96

Step by Step Solution

1. Step 1: Write the proportion equation
   42,047.85 : 63,072.03 = 12,465.96 : x
2. Step 2: Convert to fraction form
   42,047.85/63,072.03 = 12,465.96/x
3. Step 3: Cross multiply
   42,047.85x = 63,072.03 × 12,465.96
4. Step 4: Simplify right side
   42,047.85x = 786,253,403.10
5. Step 5: Solve for x
   x = 786,253,403.10/42,047.85
6. Step 6: Final answer
   x = 18,699.02