Finding the Fourth Proportional to 89,418.76, 134,191.16 and 42,036

Step by Step Solution

1. Step 1: Write the proportion equation
   89,418.76 : 134,191.16 = 42,036 : x
2. Step 2: Convert to fraction form
   89,418.76/134,191.16 = 42,036/x
3. Step 3: Cross multiply
   89,418.76x = 134,191.16 × 42,036
4. Step 4: Simplify right side
   89,418.76x = 5,640,859,601.76
5. Step 5: Solve for x
   x = 5,640,859,601.76/89,418.76
6. Step 6: Final answer
   x = 63,083.63