Finding the Fourth Proportional to 146,505.69, 220,856.61 and 136,740.63

Step by Step Solution

1. Step 1: Write the proportion equation
   146,505.69 : 220,856.61 = 136,740.63 : x
2. Step 2: Convert to fraction form
   146,505.69/220,856.61 = 136,740.63/x
3. Step 3: Cross multiply
   146,505.69x = 220,856.61 × 136,740.63
4. Step 4: Simplify right side
   146,505.69x = 30,200,071,991.06
5. Step 5: Solve for x
   x = 30,200,071,991.06/146,505.69
6. Step 6: Final answer
   x = 206,135.83