Finding the Fourth Proportional to 83,861.05, 125,791.59 and 57,485.83

Step by Step Solution

1. Step 1: Write the proportion equation
   83,861.05 : 125,791.59 = 57,485.83 : x
2. Step 2: Convert to fraction form
   83,861.05/125,791.59 = 57,485.83/x
3. Step 3: Cross multiply
   83,861.05x = 125,791.59 × 57,485.83
4. Step 4: Simplify right side
   83,861.05x = 7,231,233,958.17
5. Step 5: Solve for x
   x = 7,231,233,958.17/83,861.05
6. Step 6: Final answer
   x = 86,228.76