Finding the Fourth Proportional to 72,500.98, 108,730.59 and 19,912.18

Step by Step Solution

1. Step 1: Write the proportion equation
   72,500.98 : 108,730.59 = 19,912.18 : x
2. Step 2: Convert to fraction form
   72,500.98/108,730.59 = 19,912.18/x
3. Step 3: Cross multiply
   72,500.98x = 108,730.59 × 19,912.18
4. Step 4: Simplify right side
   72,500.98x = 2,165,063,079.59
5. Step 5: Solve for x
   x = 2,165,063,079.59/72,500.98
6. Step 6: Final answer
   x = 29,862.54