Finding the Fourth Proportional to 42,637.15, 63,937.15 and 12,235.59

Step by Step Solution

1. Step 1: Write the proportion equation
   42,637.15 : 63,937.15 = 12,235.59 : x
2. Step 2: Convert to fraction form
   42,637.15/63,937.15 = 12,235.59/x
3. Step 3: Cross multiply
   42,637.15x = 63,937.15 × 12,235.59
4. Step 4: Simplify right side
   42,637.15x = 782,308,722.58
5. Step 5: Solve for x
   x = 782,308,722.58/42,637.15
6. Step 6: Final answer
   x = 18,348.05