Finding the Fourth Proportional to 72,964.18, 109,445.59 and 20,373.58

Step by Step Solution

1. Step 1: Write the proportion equation
   72,964.18 : 109,445.59 = 20,373.58 : x
2. Step 2: Convert to fraction form
   72,964.18/109,445.59 = 20,373.58/x
3. Step 3: Cross multiply
   72,964.18x = 109,445.59 × 20,373.58
4. Step 4: Simplify right side
   72,964.18x = 2,229,798,483.51
5. Step 5: Solve for x
   x = 2,229,798,483.51/72,964.18
6. Step 6: Final answer
   x = 30,560.18