Finding the Fourth Proportional to 42,725.03, 64,081.89 and 11,137.39

Step by Step Solution

1. Step 1: Write the proportion equation
   42,725.03 : 64,081.89 = 11,137.39 : x
2. Step 2: Convert to fraction form
   42,725.03/64,081.89 = 11,137.39/x
3. Step 3: Cross multiply
   42,725.03x = 64,081.89 × 11,137.39
4. Step 4: Simplify right side
   42,725.03x = 713,704,840.66
5. Step 5: Solve for x
   x = 713,704,840.66/42,725.03
6. Step 6: Final answer
   x = 16,704.61