Finding the Fourth Proportional to 147,096.42, 220,644.72 and 102,809.64

Step by Step Solution

1. Step 1: Write the proportion equation
   147,096.42 : 220,644.72 = 102,809.64 : x
2. Step 2: Convert to fraction form
   147,096.42/220,644.72 = 102,809.64/x
3. Step 3: Cross multiply
   147,096.42x = 220,644.72 × 102,809.64
4. Step 4: Simplify right side
   147,096.42x = 22,684,404,231.10
5. Step 5: Solve for x
   x = 22,684,404,231.10/147,096.42
6. Step 6: Final answer
   x = 154,214.52