Finding the Fourth Proportional to 43,250.42, 64,870.05 and 13,671.25

Step by Step Solution

1. Step 1: Write the proportion equation
   43,250.42 : 64,870.05 = 13,671.25 : x
2. Step 2: Convert to fraction form
   43,250.42/64,870.05 = 13,671.25/x
3. Step 3: Cross multiply
   43,250.42x = 64,870.05 × 13,671.25
4. Step 4: Simplify right side
   43,250.42x = 886,854,671.06
5. Step 5: Solve for x
   x = 886,854,671.06/43,250.42
6. Step 6: Final answer
   x = 20,505.11