Finding the Fourth Proportional to 123,342.16, 185,087.05 and 53,221.47

Step by Step Solution

1. Step 1: Write the proportion equation
   123,342.16 : 185,087.05 = 53,221.47 : x
2. Step 2: Convert to fraction form
   123,342.16/185,087.05 = 53,221.47/x
3. Step 3: Cross multiply
   123,342.16x = 185,087.05 × 53,221.47
4. Step 4: Simplify right side
   123,342.16x = 9,850,604,627.69
5. Step 5: Solve for x
   x = 9,850,604,627.69/123,342.16
6. Step 6: Final answer
   x = 79,864.05