Finding the Fourth Proportional to 123,921.45, 185,777.69 and 53,747.91

Step by Step Solution

1. Step 1: Write the proportion equation
   123,921.45 : 185,777.69 = 53,747.91 : x
2. Step 2: Convert to fraction form
   123,921.45/185,777.69 = 53,747.91/x
3. Step 3: Cross multiply
   123,921.45x = 185,777.69 × 53,747.91
4. Step 4: Simplify right side
   123,921.45x = 9,985,162,293.39
5. Step 5: Solve for x
   x = 9,985,162,293.39/123,921.45
6. Step 6: Final answer
   x = 80,576.55