Finding the Fourth Proportional to 423,064.56, 634,656.24 and 123,567.12

Step by Step Solution

1. Step 1: Write the proportion equation
   423,064.56 : 634,656.24 = 123,567.12 : x
2. Step 2: Convert to fraction form
   423,064.56/634,656.24 = 123,567.12/x
3. Step 3: Cross multiply
   423,064.56x = 634,656.24 × 123,567.12
4. Step 4: Simplify right side
   423,064.56x = 78,422,643,766.83
5. Step 5: Solve for x
   x = 78,422,643,766.83/423,064.56
6. Step 6: Final answer
   x = 185,368.03