Finding the Fourth Proportional to 72,457.31, 99,972.17 and 41,822.91

Step by Step Solution

1. Step 1: Write the proportion equation
   72,457.31 : 99,972.17 = 41,822.91 : x
2. Step 2: Convert to fraction form
   72,457.31/99,972.17 = 41,822.91/x
3. Step 3: Cross multiply
   72,457.31x = 99,972.17 × 41,822.91
4. Step 4: Simplify right side
   72,457.31x = 4,181,127,016.14
5. Step 5: Solve for x
   x = 4,181,127,016.14/72,457.31
6. Step 6: Final answer
   x = 57,704.69