Finding the Fourth Proportional to 123,776.55, 185,704.74 and 57,260.25

Step by Step Solution

1. Step 1: Write the proportion equation
   123,776.55 : 185,704.74 = 57,260.25 : x
2. Step 2: Convert to fraction form
   123,776.55/185,704.74 = 57,260.25/x
3. Step 3: Cross multiply
   123,776.55x = 185,704.74 × 57,260.25
4. Step 4: Simplify right side
   123,776.55x = 10,633,499,838.59
5. Step 5: Solve for x
   x = 10,633,499,838.59/123,776.55
6. Step 6: Final answer
   x = 85,908.84