Finding the Fourth Proportional to 112,621.80, 155,393.28 and 67,293

Step by Step Solution

1. Step 1: Write the proportion equation
   112,621.80 : 155,393.28 = 67,293 : x
2. Step 2: Convert to fraction form
   112,621.80/155,393.28 = 67,293/x
3. Step 3: Cross multiply
   112,621.80x = 155,393.28 × 67,293
4. Step 4: Simplify right side
   112,621.80x = 10,456,879,991.04
5. Step 5: Solve for x
   x = 10,456,879,991.04/112,621.80
6. Step 6: Final answer
   x = 92,849.52