Finding the Fourth Proportional to 290,124.72, 435,321 and 132,401.52

Step by Step Solution

1. Step 1: Write the proportion equation
   290,124.72 : 435,321 = 132,401.52 : x
2. Step 2: Convert to fraction form
   290,124.72/435,321 = 132,401.52/x
3. Step 3: Cross multiply
   290,124.72x = 435,321 × 132,401.52
4. Step 4: Simplify right side
   290,124.72x = 57,637,162,087.92
5. Step 5: Solve for x
   x = 57,637,162,087.92/290,124.72
6. Step 6: Final answer
   x = 198,663.40