Finding the Fourth Proportional to 285,178.72, 428,543.52 and 152,152.96

Step by Step Solution

1. Step 1: Write the proportion equation
   285,178.72 : 428,543.52 = 152,152.96 : x
2. Step 2: Convert to fraction form
   285,178.72/428,543.52 = 152,152.96/x
3. Step 3: Cross multiply
   285,178.72x = 428,543.52 × 152,152.96
4. Step 4: Simplify right side
   285,178.72x = 65,204,165,056.82
5. Step 5: Solve for x
   x = 65,204,165,056.82/285,178.72
6. Step 6: Final answer
   x = 228,643.16