Finding the Fourth Proportional to 89,678.16, 134,451.36 and 42,963.84

Step by Step Solution

1. Step 1: Write the proportion equation
   89,678.16 : 134,451.36 = 42,963.84 : x
2. Step 2: Convert to fraction form
   89,678.16/134,451.36 = 42,963.84/x
3. Step 3: Cross multiply
   89,678.16x = 134,451.36 × 42,963.84
4. Step 4: Simplify right side
   89,678.16x = 5,776,546,718.82
5. Step 5: Solve for x
   x = 5,776,546,718.82/89,678.16
6. Step 6: Final answer
   x = 64,414.20