Finding the Fourth Proportional to 67,448.40, 92,992.32 and 55,304.18

Step by Step Solution

1. Step 1: Write the proportion equation
   67,448.40 : 92,992.32 = 55,304.18 : x
2. Step 2: Convert to fraction form
   67,448.40/92,992.32 = 55,304.18/x
3. Step 3: Cross multiply
   67,448.40x = 92,992.32 × 55,304.18
4. Step 4: Simplify right side
   67,448.40x = 5,142,863,746.33
5. Step 5: Solve for x
   x = 5,142,863,746.33/67,448.40
6. Step 6: Final answer
   x = 76,248.86