Finding the Fourth Proportional to 72,591.51, 108,887.82 and 20,003.88

Step by Step Solution

1. Step 1: Write the proportion equation
   72,591.51 : 108,887.82 = 20,003.88 : x
2. Step 2: Convert to fraction form
   72,591.51/108,887.82 = 20,003.88/x
3. Step 3: Cross multiply
   72,591.51x = 108,887.82 × 20,003.88
4. Step 4: Simplify right side
   72,591.51x = 2,178,178,884.74
5. Step 5: Solve for x
   x = 2,178,178,884.74/72,591.51
6. Step 6: Final answer
   x = 30,005.97