Finding the Fourth Proportional to 201,796.50, 301,947.42 and 126,315.30

Step by Step Solution

1. Step 1: Write the proportion equation
   201,796.50 : 301,947.42 = 126,315.30 : x
2. Step 2: Convert to fraction form
   201,796.50/301,947.42 = 126,315.30/x
3. Step 3: Cross multiply
   201,796.50x = 301,947.42 × 126,315.30
4. Step 4: Simplify right side
   201,796.50x = 38,140,578,941.53
5. Step 5: Solve for x
   x = 38,140,578,941.53/201,796.50
6. Step 6: Final answer
   x = 189,005.16