Finding the Fourth Proportional to 72,637.83, 108,963.02 and 20,047.32

Step by Step Solution

1. Step 1: Write the proportion equation
   72,637.83 : 108,963.02 = 20,047.32 : x
2. Step 2: Convert to fraction form
   72,637.83/108,963.02 = 20,047.32/x
3. Step 3: Cross multiply
   72,637.83x = 108,963.02 × 20,047.32
4. Step 4: Simplify right side
   72,637.83x = 2,184,415,885.05
5. Step 5: Solve for x
   x = 2,184,415,885.05/72,637.83
6. Step 6: Final answer
   x = 30,072.70