Finding the Fourth Proportional to 42,342.09, 63,501.27 and 12,755.61

Step by Step Solution

1. Step 1: Write the proportion equation
   42,342.09 : 63,501.27 = 12,755.61 : x
2. Step 2: Convert to fraction form
   42,342.09/63,501.27 = 12,755.61/x
3. Step 3: Cross multiply
   42,342.09x = 63,501.27 × 12,755.61
4. Step 4: Simplify right side
   42,342.09x = 809,997,434.62
5. Step 5: Solve for x
   x = 809,997,434.62/42,342.09
6. Step 6: Final answer
   x = 19,129.84