Finding the Fourth Proportional to 72,871.50, 109,307.24 and 28,467.11

Step by Step Solution

1. Step 1: Write the proportion equation
   72,871.50 : 109,307.24 = 28,467.11 : x
2. Step 2: Convert to fraction form
   72,871.50/109,307.24 = 28,467.11/x
3. Step 3: Cross multiply
   72,871.50x = 109,307.24 × 28,467.11
4. Step 4: Simplify right side
   72,871.50x = 3,111,660,536.00
5. Step 5: Solve for x
   x = 3,111,660,536.00/72,871.50
6. Step 6: Final answer
   x = 42,700.65