Finding the Fourth Proportional to 72,851.40, 109,212.30 and 28,468.08

Step by Step Solution

1. Step 1: Write the proportion equation
   72,851.40 : 109,212.30 = 28,468.08 : x
2. Step 2: Convert to fraction form
   72,851.40/109,212.30 = 28,468.08/x
3. Step 3: Cross multiply
   72,851.40x = 109,212.30 × 28,468.08
4. Step 4: Simplify right side
   72,851.40x = 3,109,064,493.38
5. Step 5: Solve for x
   x = 3,109,064,493.38/72,851.40
6. Step 6: Final answer
   x = 42,676.80