Finding the Fourth Proportional to 42,667.44, 63,998.76 and 13,085.19

Step by Step Solution

1. Step 1: Write the proportion equation
   42,667.44 : 63,998.76 = 13,085.19 : x
2. Step 2: Convert to fraction form
   42,667.44/63,998.76 = 13,085.19/x
3. Step 3: Cross multiply
   42,667.44x = 63,998.76 × 13,085.19
4. Step 4: Simplify right side
   42,667.44x = 837,435,909.83
5. Step 5: Solve for x
   x = 837,435,909.83/42,667.44
6. Step 6: Final answer
   x = 19,627.05