Finding the Fourth Proportional to 45,107.32, 67,667.48 and 13,945

Step by Step Solution

1. Step 1: Write the proportion equation
   45,107.32 : 67,667.48 = 13,945 : x
2. Step 2: Convert to fraction form
   45,107.32/67,667.48 = 13,945/x
3. Step 3: Cross multiply
   45,107.32x = 67,667.48 × 13,945
4. Step 4: Simplify right side
   45,107.32x = 943,623,008.60
5. Step 5: Solve for x
   x = 943,623,008.60/45,107.32
6. Step 6: Final answer
   x = 20,919.51