Finding the Fourth Proportional to 123,059.80, 184,443.90 and 91,858.60

Step by Step Solution

1. Step 1: Write the proportion equation
   123,059.80 : 184,443.90 = 91,858.60 : x
2. Step 2: Convert to fraction form
   123,059.80/184,443.90 = 91,858.60/x
3. Step 3: Cross multiply
   123,059.80x = 184,443.90 × 91,858.60
4. Step 4: Simplify right side
   123,059.80x = 16,942,758,432.54
5. Step 5: Solve for x
   x = 16,942,758,432.54/123,059.80
6. Step 6: Final answer
   x = 137,679.07