Finding the Fourth Proportional to 422,838.73, 634,196.55 and 123,238.87

Step by Step Solution

1. Step 1: Write the proportion equation
   422,838.73 : 634,196.55 = 123,238.87 : x
2. Step 2: Convert to fraction form
   422,838.73/634,196.55 = 123,238.87/x
3. Step 3: Cross multiply
   422,838.73x = 634,196.55 × 123,238.87
4. Step 4: Simplify right side
   422,838.73x = 78,157,665,056.55
5. Step 5: Solve for x
   x = 78,157,665,056.55/422,838.73
6. Step 6: Final answer
   x = 184,840.36