Finding the Fourth Proportional to 108,098.72, 149,133.34 and 72,231.92

Step by Step Solution

1. Step 1: Write the proportion equation
   108,098.72 : 149,133.34 = 72,231.92 : x
2. Step 2: Convert to fraction form
   108,098.72/149,133.34 = 72,231.92/x
3. Step 3: Cross multiply
   108,098.72x = 149,133.34 × 72,231.92
4. Step 4: Simplify right side
   108,098.72x = 10,772,187,484.21
5. Step 5: Solve for x
   x = 10,772,187,484.21/108,098.72
6. Step 6: Final answer
   x = 99,651.39