Finding the Fourth Proportional to 54,341.48, 81,505.24 and 21,038.72

Step by Step Solution

1. Step 1: Write the proportion equation
   54,341.48 : 81,505.24 = 21,038.72 : x
2. Step 2: Convert to fraction form
   54,341.48/81,505.24 = 21,038.72/x
3. Step 3: Cross multiply
   54,341.48x = 81,505.24 × 21,038.72
4. Step 4: Simplify right side
   54,341.48x = 1,714,765,922.89
5. Step 5: Solve for x
   x = 1,714,765,922.89/54,341.48
6. Step 6: Final answer
   x = 31,555.38