Finding the Fourth Proportional to 123,619.10, 185,504.78 and 48,726.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,619.10 : 185,504.78 = 48,726.50 : x
2. Step 2: Convert to fraction form
   123,619.10/185,504.78 = 48,726.50/x
3. Step 3: Cross multiply
   123,619.10x = 185,504.78 × 48,726.50
4. Step 4: Simplify right side
   123,619.10x = 9,038,997,856.96
5. Step 5: Solve for x
   x = 9,038,997,856.96/123,619.10
6. Step 6: Final answer
   x = 73,119.75