Finding the Fourth Proportional to 89,679.16, 134,452.86 and 42,964.84

Step by Step Solution

1. Step 1: Write the proportion equation
   89,679.16 : 134,452.86 = 42,964.84 : x
2. Step 2: Convert to fraction form
   89,679.16/134,452.86 = 42,964.84/x
3. Step 3: Cross multiply
   89,679.16x = 134,452.86 × 42,964.84
4. Step 4: Simplify right side
   89,679.16x = 5,776,745,617.44
5. Step 5: Solve for x
   x = 5,776,745,617.44/89,679.16
6. Step 6: Final answer
   x = 64,415.70