Finding the Fourth Proportional to 72,100.06, 108,131.85 and 21,487.41

Step by Step Solution

1. Step 1: Write the proportion equation
   72,100.06 : 108,131.85 = 21,487.41 : x
2. Step 2: Convert to fraction form
   72,100.06/108,131.85 = 21,487.41/x
3. Step 3: Cross multiply
   72,100.06x = 108,131.85 × 21,487.41
4. Step 4: Simplify right side
   72,100.06x = 2,323,473,395.01
5. Step 5: Solve for x
   x = 2,323,473,395.01/72,100.06
6. Step 6: Final answer
   x = 32,225.68