Finding the Fourth Proportional to 72,061.98, 108,104.49 and 30,515.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,061.98 : 108,104.49 = 30,515.10 : x
2. Step 2: Convert to fraction form
   72,061.98/108,104.49 = 30,515.10/x
3. Step 3: Cross multiply
   72,061.98x = 108,104.49 × 30,515.10
4. Step 4: Simplify right side
   72,061.98x = 3,298,819,322.80
5. Step 5: Solve for x
   x = 3,298,819,322.80/72,061.98
6. Step 6: Final answer
   x = 45,777.53