Finding the Fourth Proportional to 89,649.26, 134,473.49 and 42,759.98

Step by Step Solution

1. Step 1: Write the proportion equation
   89,649.26 : 134,473.49 = 42,759.98 : x
2. Step 2: Convert to fraction form
   89,649.26/134,473.49 = 42,759.98/x
3. Step 3: Cross multiply
   89,649.26x = 134,473.49 × 42,759.98
4. Step 4: Simplify right side
   89,649.26x = 5,750,083,865.31
5. Step 5: Solve for x
   x = 5,750,083,865.31/89,649.26
6. Step 6: Final answer
   x = 64,139.78