Finding the Fourth Proportional to 72,079.15, 108,118.47 and 19,488.63

Step by Step Solution

1. Step 1: Write the proportion equation
   72,079.15 : 108,118.47 = 19,488.63 : x
2. Step 2: Convert to fraction form
   72,079.15/108,118.47 = 19,488.63/x
3. Step 3: Cross multiply
   72,079.15x = 108,118.47 × 19,488.63
4. Step 4: Simplify right side
   72,079.15x = 2,107,080,858.00
5. Step 5: Solve for x
   x = 2,107,080,858.00/72,079.15
6. Step 6: Final answer
   x = 29,232.88