Finding the Fourth Proportional to 89,672.48, 134,537.88 and 42,929

Step by Step Solution

1. Step 1: Write the proportion equation
   89,672.48 : 134,537.88 = 42,929 : x
2. Step 2: Convert to fraction form
   89,672.48/134,537.88 = 42,929/x
3. Step 3: Cross multiply
   89,672.48x = 134,537.88 × 42,929
4. Step 4: Simplify right side
   89,672.48x = 5,775,576,650.52
5. Step 5: Solve for x
   x = 5,775,576,650.52/89,672.48
6. Step 6: Final answer
   x = 64,407.46