Finding the Fourth Proportional to 357,443.31, 493,148.43 and 228,457.29

Step by Step Solution

1. Step 1: Write the proportion equation
   357,443.31 : 493,148.43 = 228,457.29 : x
2. Step 2: Convert to fraction form
   357,443.31/493,148.43 = 228,457.29/x
3. Step 3: Cross multiply
   357,443.31x = 493,148.43 × 228,457.29
4. Step 4: Simplify right side
   357,443.31x = 112,663,353,885.56
5. Step 5: Solve for x
   x = 112,663,353,885.56/357,443.31
6. Step 6: Final answer
   x = 315,192.23