Finding the Fourth Proportional to 42,068.46, 63,103.60 and 12,488.37

Step by Step Solution

1. Step 1: Write the proportion equation
   42,068.46 : 63,103.60 = 12,488.37 : x
2. Step 2: Convert to fraction form
   42,068.46/63,103.60 = 12,488.37/x
3. Step 3: Cross multiply
   42,068.46x = 63,103.60 × 12,488.37
4. Step 4: Simplify right side
   42,068.46x = 788,061,105.13
5. Step 5: Solve for x
   x = 788,061,105.13/42,068.46
6. Step 6: Final answer
   x = 18,732.83