Finding the Fourth Proportional to 89,611.48, 134,446.38 and 42,868

Step by Step Solution

1. Step 1: Write the proportion equation
   89,611.48 : 134,446.38 = 42,868 : x
2. Step 2: Convert to fraction form
   89,611.48/134,446.38 = 42,868/x
3. Step 3: Cross multiply
   89,611.48x = 134,446.38 × 42,868
4. Step 4: Simplify right side
   89,611.48x = 5,763,447,417.84
5. Step 5: Solve for x
   x = 5,763,447,417.84/89,611.48
6. Step 6: Final answer
   x = 64,315.95