Finding the Fourth Proportional to 422,856.27, 634,272.12 and 156,610.89

Step by Step Solution

1. Step 1: Write the proportion equation
   422,856.27 : 634,272.12 = 156,610.89 : x
2. Step 2: Convert to fraction form
   422,856.27/634,272.12 = 156,610.89/x
3. Step 3: Cross multiply
   422,856.27x = 634,272.12 × 156,610.89
4. Step 4: Simplify right side
   422,856.27x = 99,333,921,215.39
5. Step 5: Solve for x
   x = 99,333,921,215.39/422,856.27
6. Step 6: Final answer
   x = 234,911.79