Finding the Fourth Proportional to 285,188.72, 428,558.52 and 152,162.96

Step by Step Solution

1. Step 1: Write the proportion equation
   285,188.72 : 428,558.52 = 152,162.96 : x
2. Step 2: Convert to fraction form
   285,188.72/428,558.52 = 152,162.96/x
3. Step 3: Cross multiply
   285,188.72x = 428,558.52 × 152,162.96
4. Step 4: Simplify right side
   285,188.72x = 65,210,732,936.42
5. Step 5: Solve for x
   x = 65,210,732,936.42/285,188.72
6. Step 6: Final answer
   x = 228,658.18