Finding the Fourth Proportional to 257,853.12, 386,118.72 and 152,747.52

Step by Step Solution

1. Step 1: Write the proportion equation
   257,853.12 : 386,118.72 = 152,747.52 : x
2. Step 2: Convert to fraction form
   257,853.12/386,118.72 = 152,747.52/x
3. Step 3: Cross multiply
   257,853.12x = 386,118.72 × 152,747.52
4. Step 4: Simplify right side
   257,853.12x = 58,978,676,905.57
5. Step 5: Solve for x
   x = 58,978,676,905.57/257,853.12
6. Step 6: Final answer
   x = 228,729.74