Finding the Fourth Proportional to 59,118.96, 81,593.40 and 57,174.96

Step by Step Solution

1. Step 1: Write the proportion equation
   59,118.96 : 81,593.40 = 57,174.96 : x
2. Step 2: Convert to fraction form
   59,118.96/81,593.40 = 57,174.96/x
3. Step 3: Cross multiply
   59,118.96x = 81,593.40 × 57,174.96
4. Step 4: Simplify right side
   59,118.96x = 4,665,099,381.26
5. Step 5: Solve for x
   x = 4,665,099,381.26/59,118.96
6. Step 6: Final answer
   x = 78,910.38