Finding the Fourth Proportional to 150,835.06, 208,105.56 and 87,149.62

Step by Step Solution

1. Step 1: Write the proportion equation
   150,835.06 : 208,105.56 = 87,149.62 : x
2. Step 2: Convert to fraction form
   150,835.06/208,105.56 = 87,149.62/x
3. Step 3: Cross multiply
   150,835.06x = 208,105.56 × 87,149.62
4. Step 4: Simplify right side
   150,835.06x = 18,136,320,473.89
5. Step 5: Solve for x
   x = 18,136,320,473.89/150,835.06
6. Step 6: Final answer
   x = 120,239.42