Finding the Fourth Proportional to 221,443.32, 331,665.58 and 102,865.13

Step by Step Solution

1. Step 1: Write the proportion equation
   221,443.32 : 331,665.58 = 102,865.13 : x
2. Step 2: Convert to fraction form
   221,443.32/331,665.58 = 102,865.13/x
3. Step 3: Cross multiply
   221,443.32x = 331,665.58 × 102,865.13
4. Step 4: Simplify right side
   221,443.32x = 34,116,823,003.23
5. Step 5: Solve for x
   x = 34,116,823,003.23/221,443.32
6. Step 6: Final answer
   x = 154,065.71