Finding the Fourth Proportional to 123,150.95, 184,433.20 and 78,639.83

Step by Step Solution

1. Step 1: Write the proportion equation
   123,150.95 : 184,433.20 = 78,639.83 : x
2. Step 2: Convert to fraction form
   123,150.95/184,433.20 = 78,639.83/x
3. Step 3: Cross multiply
   123,150.95x = 184,433.20 × 78,639.83
4. Step 4: Simplify right side
   123,150.95x = 14,503,794,836.67
5. Step 5: Solve for x
   x = 14,503,794,836.67/123,150.95
6. Step 6: Final answer
   x = 117,772.50