Finding the Fourth Proportional to 72,682.88, 109,058.72 and 30,572.20

Step by Step Solution

1. Step 1: Write the proportion equation
   72,682.88 : 109,058.72 = 30,572.20 : x
2. Step 2: Convert to fraction form
   72,682.88/109,058.72 = 30,572.20/x
3. Step 3: Cross multiply
   72,682.88x = 109,058.72 × 30,572.20
4. Step 4: Simplify right side
   72,682.88x = 3,334,164,999.58
5. Step 5: Solve for x
   x = 3,334,164,999.58/72,682.88
6. Step 6: Final answer
   x = 45,872.77