Finding the Fourth Proportional to 42,059.92, 63,080.15 and 12,470.62

Step by Step Solution

1. Step 1: Write the proportion equation
   42,059.92 : 63,080.15 = 12,470.62 : x
2. Step 2: Convert to fraction form
   42,059.92/63,080.15 = 12,470.62/x
3. Step 3: Cross multiply
   42,059.92x = 63,080.15 × 12,470.62
4. Step 4: Simplify right side
   42,059.92x = 786,648,580.19
5. Step 5: Solve for x
   x = 786,648,580.19/42,059.92
6. Step 6: Final answer
   x = 18,703.05