Finding the Fourth Proportional to 636,321.50, 954,488.01 and 193,089.50

Step by Step Solution

1. Step 1: Write the proportion equation
   636,321.50 : 954,488.01 = 193,089.50 : x
2. Step 2: Convert to fraction form
   636,321.50/954,488.01 = 193,089.50/x
3. Step 3: Cross multiply
   636,321.50x = 954,488.01 × 193,089.50
4. Step 4: Simplify right side
   636,321.50x = 184,301,612,606.90
5. Step 5: Solve for x
   x = 184,301,612,606.90/636,321.50
6. Step 6: Final answer
   x = 289,636.00