Finding the Fourth Proportional to 161,620.50, 242,430.59 and 43,288.61

Step by Step Solution

1. Step 1: Write the proportion equation
   161,620.50 : 242,430.59 = 43,288.61 : x
2. Step 2: Convert to fraction form
   161,620.50/242,430.59 = 43,288.61/x
3. Step 3: Cross multiply
   161,620.50x = 242,430.59 × 43,288.61
4. Step 4: Simplify right side
   161,620.50x = 10,494,481,833.98
5. Step 5: Solve for x
   x = 10,494,481,833.98/161,620.50
6. Step 6: Final answer
   x = 64,932.86