Finding the Fourth Proportional to 105,753, 145,944.90 and 61,055.40

Step by Step Solution

1. Step 1: Write the proportion equation
   105,753 : 145,944.90 = 61,055.40 : x
2. Step 2: Convert to fraction form
   105,753/145,944.90 = 61,055.40/x
3. Step 3: Cross multiply
   105,753x = 145,944.90 × 61,055.40
4. Step 4: Simplify right side
   105,753x = 8,910,724,247.46
5. Step 5: Solve for x
   x = 8,910,724,247.46/105,753
6. Step 6: Final answer
   x = 84,259.78