Finding the Fourth Proportional to 60,391.36, 90,734.72 and 57,034.24

Step by Step Solution

1. Step 1: Write the proportion equation
   60,391.36 : 90,734.72 = 57,034.24 : x
2. Step 2: Convert to fraction form
   60,391.36/90,734.72 = 57,034.24/x
3. Step 3: Cross multiply
   60,391.36x = 90,734.72 × 57,034.24
4. Step 4: Simplify right side
   60,391.36x = 5,174,985,796.81
5. Step 5: Solve for x
   x = 5,174,985,796.81/60,391.36
6. Step 6: Final answer
   x = 85,690.83