Finding the Fourth Proportional to 123,921.21, 171,012.83 and 67,333.53

Step by Step Solution

1. Step 1: Write the proportion equation
   123,921.21 : 171,012.83 = 67,333.53 : x
2. Step 2: Convert to fraction form
   123,921.21/171,012.83 = 67,333.53/x
3. Step 3: Cross multiply
   123,921.21x = 171,012.83 × 67,333.53
4. Step 4: Simplify right side
   123,921.21x = 11,514,897,182.52
5. Step 5: Solve for x
   x = 11,514,897,182.52/123,921.21
6. Step 6: Final answer
   x = 92,921.12