Finding the Fourth Proportional to 72,847.76, 109,262.52 and 20,261.34

Step by Step Solution

1. Step 1: Write the proportion equation
   72,847.76 : 109,262.52 = 20,261.34 : x
2. Step 2: Convert to fraction form
   72,847.76/109,262.52 = 20,261.34/x
3. Step 3: Cross multiply
   72,847.76x = 109,262.52 × 20,261.34
4. Step 4: Simplify right side
   72,847.76x = 2,213,805,066.98
5. Step 5: Solve for x
   x = 2,213,805,066.98/72,847.76
6. Step 6: Final answer
   x = 30,389.48