Finding the Fourth Proportional to 89,436, 123,370.32 and 55,843.68

Step by Step Solution

1. Step 1: Write the proportion equation
   89,436 : 123,370.32 = 55,843.68 : x
2. Step 2: Convert to fraction form
   89,436/123,370.32 = 55,843.68/x
3. Step 3: Cross multiply
   89,436x = 123,370.32 × 55,843.68
4. Step 4: Simplify right side
   89,436x = 6,889,452,671.58
5. Step 5: Solve for x
   x = 6,889,452,671.58/89,436
6. Step 6: Final answer
   x = 77,032.21