Finding the Fourth Proportional to 229,985.29, 345,033.42 and 72,213.72

Step by Step Solution

1. Step 1: Write the proportion equation
   229,985.29 : 345,033.42 = 72,213.72 : x
2. Step 2: Convert to fraction form
   229,985.29/345,033.42 = 72,213.72/x
3. Step 3: Cross multiply
   229,985.29x = 345,033.42 × 72,213.72
4. Step 4: Simplify right side
   229,985.29x = 24,916,146,782.52
5. Step 5: Solve for x
   x = 24,916,146,782.52/229,985.29
6. Step 6: Final answer
   x = 108,338.00