Finding the Fourth Proportional to 72,588.51, 108,883.31 and 20,000.88

Step by Step Solution

1. Step 1: Write the proportion equation
   72,588.51 : 108,883.31 = 20,000.88 : x
2. Step 2: Convert to fraction form
   72,588.51/108,883.31 = 20,000.88/x
3. Step 3: Cross multiply
   72,588.51x = 108,883.31 × 20,000.88
4. Step 4: Simplify right side
   72,588.51x = 2,177,761,917.31
5. Step 5: Solve for x
   x = 2,177,761,917.31/72,588.51
6. Step 6: Final answer
   x = 30,001.47