Finding the Fourth Proportional to 189,628.02, 261,680.72 and 103,585.62

Step by Step Solution

1. Step 1: Write the proportion equation
   189,628.02 : 261,680.72 = 103,585.62 : x
2. Step 2: Convert to fraction form
   189,628.02/261,680.72 = 103,585.62/x
3. Step 3: Cross multiply
   189,628.02x = 261,680.72 × 103,585.62
4. Step 4: Simplify right side
   189,628.02x = 27,106,359,105.32
5. Step 5: Solve for x
   x = 27,106,359,105.32/189,628.02
6. Step 6: Final answer
   x = 142,944.90