Finding the Fourth Proportional to 51,409.50, 70,945.56 and 30,189.12

Step by Step Solution

1. Step 1: Write the proportion equation
   51,409.50 : 70,945.56 = 30,189.12 : x
2. Step 2: Convert to fraction form
   51,409.50/70,945.56 = 30,189.12/x
3. Step 3: Cross multiply
   51,409.50x = 70,945.56 × 30,189.12
4. Step 4: Simplify right side
   51,409.50x = 2,141,784,024.31
5. Step 5: Solve for x
   x = 2,141,784,024.31/51,409.50
6. Step 6: Final answer
   x = 41,661.25