Finding the Fourth Proportional to 285,695.08, 428,280.18 and 152,667.16

Step by Step Solution

1. Step 1: Write the proportion equation
   285,695.08 : 428,280.18 = 152,667.16 : x
2. Step 2: Convert to fraction form
   285,695.08/428,280.18 = 152,667.16/x
3. Step 3: Cross multiply
   285,695.08x = 428,280.18 × 152,667.16
4. Step 4: Simplify right side
   285,695.08x = 65,384,318,764.89
5. Step 5: Solve for x
   x = 65,384,318,764.89/285,695.08
6. Step 6: Final answer
   x = 228,860.50