Finding the Fourth Proportional to 154,426.50, 231,678.63 and 43,618.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,426.50 : 231,678.63 = 43,618.50 : x
2. Step 2: Convert to fraction form
   154,426.50/231,678.63 = 43,618.50/x
3. Step 3: Cross multiply
   154,426.50x = 231,678.63 × 43,618.50
4. Step 4: Simplify right side
   154,426.50x = 10,105,474,322.66
5. Step 5: Solve for x
   x = 10,105,474,322.66/154,426.50
6. Step 6: Final answer
   x = 65,438.73