Finding the Fourth Proportional to 422,971.04, 634,485.72 and 123,454.10

Step by Step Solution

1. Step 1: Write the proportion equation
   422,971.04 : 634,485.72 = 123,454.10 : x
2. Step 2: Convert to fraction form
   422,971.04/634,485.72 = 123,454.10/x
3. Step 3: Cross multiply
   422,971.04x = 634,485.72 × 123,454.10
4. Step 4: Simplify right side
   422,971.04x = 78,329,863,525.45
5. Step 5: Solve for x
   x = 78,329,863,525.45/422,971.04
6. Step 6: Final answer
   x = 185,189.66