Finding the Fourth Proportional to 72,301.10, 108,435.45 and 47,515.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,301.10 : 108,435.45 = 47,515.10 : x
2. Step 2: Convert to fraction form
   72,301.10/108,435.45 = 47,515.10/x
3. Step 3: Cross multiply
   72,301.10x = 108,435.45 × 47,515.10
4. Step 4: Simplify right side
   72,301.10x = 5,152,321,250.30
5. Step 5: Solve for x
   x = 5,152,321,250.30/72,301.10
6. Step 6: Final answer
   x = 71,262.00