Finding the Fourth Proportional to 39,781.47, 59,667.35 and 16,404.87

Step by Step Solution

1. Step 1: Write the proportion equation
   39,781.47 : 59,667.35 = 16,404.87 : x
2. Step 2: Convert to fraction form
   39,781.47/59,667.35 = 16,404.87/x
3. Step 3: Cross multiply
   39,781.47x = 59,667.35 × 16,404.87
4. Step 4: Simplify right side
   39,781.47x = 978,835,037.97
5. Step 5: Solve for x
   x = 978,835,037.97/39,781.47
6. Step 6: Final answer
   x = 24,605.30