Finding the Fourth Proportional to 290,131.72, 435,331.50 and 132,408.52

Step by Step Solution

1. Step 1: Write the proportion equation
   290,131.72 : 435,331.50 = 132,408.52 : x
2. Step 2: Convert to fraction form
   290,131.72/435,331.50 = 132,408.52/x
3. Step 3: Cross multiply
   290,131.72x = 435,331.50 × 132,408.52
4. Step 4: Simplify right side
   290,131.72x = 57,641,599,624.38
5. Step 5: Solve for x
   x = 57,641,599,624.38/290,131.72
6. Step 6: Final answer
   x = 198,673.90