Finding the Fourth Proportional to 71,965.77, 99,224.51 and 59,174.25

Step by Step Solution

1. Step 1: Write the proportion equation
   71,965.77 : 99,224.51 = 59,174.25 : x
2. Step 2: Convert to fraction form
   71,965.77/99,224.51 = 59,174.25/x
3. Step 3: Cross multiply
   71,965.77x = 99,224.51 × 59,174.25
4. Step 4: Simplify right side
   71,965.77x = 5,871,535,665.00
5. Step 5: Solve for x
   x = 5,871,535,665.00/71,965.77
6. Step 6: Final answer
   x = 81,587.89