Finding the Fourth Proportional to 309,256.16, 463,896.50 and 147,111.26

Step by Step Solution

1. Step 1: Write the proportion equation
   309,256.16 : 463,896.50 = 147,111.26 : x
2. Step 2: Convert to fraction form
   309,256.16/463,896.50 = 147,111.26/x
3. Step 3: Cross multiply
   309,256.16x = 463,896.50 × 147,111.26
4. Step 4: Simplify right side
   309,256.16x = 68,244,399,048.77
5. Step 5: Solve for x
   x = 68,244,399,048.77/309,256.16
6. Step 6: Final answer
   x = 220,672.72