Finding the Fourth Proportional to 636,404.27, 954,606.06 and 187,128.86

Step by Step Solution

1. Step 1: Write the proportion equation
   636,404.27 : 954,606.06 = 187,128.86 : x
2. Step 2: Convert to fraction form
   636,404.27/954,606.06 = 187,128.86/x
3. Step 3: Cross multiply
   636,404.27x = 954,606.06 × 187,128.86
4. Step 4: Simplify right side
   636,404.27x = 178,634,338,983.86
5. Step 5: Solve for x
   x = 178,634,338,983.86/636,404.27
6. Step 6: Final answer
   x = 280,693.18