Finding the Fourth Proportional to 89,844, 123,086.16 and 86,479.28

Step by Step Solution

1. Step 1: Write the proportion equation
   89,844 : 123,086.16 = 86,479.28 : x
2. Step 2: Convert to fraction form
   89,844/123,086.16 = 86,479.28/x
3. Step 3: Cross multiply
   89,844x = 123,086.16 × 86,479.28
4. Step 4: Simplify right side
   89,844x = 10,644,402,494.76
5. Step 5: Solve for x
   x = 10,644,402,494.76/89,844
6. Step 6: Final answer
   x = 118,476.50