Finding the Fourth Proportional to 178,909.43, 268,362.72 and 45,789.30

Step by Step Solution

1. Step 1: Write the proportion equation
   178,909.43 : 268,362.72 = 45,789.30 : x
2. Step 2: Convert to fraction form
   178,909.43/268,362.72 = 45,789.30/x
3. Step 3: Cross multiply
   178,909.43x = 268,362.72 × 45,789.30
4. Step 4: Simplify right side
   178,909.43x = 12,288,141,094.90
5. Step 5: Solve for x
   x = 12,288,141,094.90/178,909.43
6. Step 6: Final answer
   x = 68,683.59