Finding the Fourth Proportional to 155,216.48, 233,861.89 and 140,240.99

Step by Step Solution

1. Step 1: Write the proportion equation
   155,216.48 : 233,861.89 = 140,240.99 : x
2. Step 2: Convert to fraction form
   155,216.48/233,861.89 = 140,240.99/x
3. Step 3: Cross multiply
   155,216.48x = 233,861.89 × 140,240.99
4. Step 4: Simplify right side
   155,216.48x = 32,797,022,976.87
5. Step 5: Solve for x
   x = 32,797,022,976.87/155,216.48
6. Step 6: Final answer
   x = 211,298.59