Finding the Fourth Proportional to 72,700.36, 109,055.72 and 19,392.03

Step by Step Solution

1. Step 1: Write the proportion equation
   72,700.36 : 109,055.72 = 19,392.03 : x
2. Step 2: Convert to fraction form
   72,700.36/109,055.72 = 19,392.03/x
3. Step 3: Cross multiply
   72,700.36x = 109,055.72 × 19,392.03
4. Step 4: Simplify right side
   72,700.36x = 2,114,811,793.91
5. Step 5: Solve for x
   x = 2,114,811,793.91/72,700.36
6. Step 6: Final answer
   x = 29,089.43