Finding the Fourth Proportional to 65,156.28, 89,895.06 and 38,290.20

Step by Step Solution

1. Step 1: Write the proportion equation
   65,156.28 : 89,895.06 = 38,290.20 : x
2. Step 2: Convert to fraction form
   65,156.28/89,895.06 = 38,290.20/x
3. Step 3: Cross multiply
   65,156.28x = 89,895.06 × 38,290.20
4. Step 4: Simplify right side
   65,156.28x = 3,442,099,826.41
5. Step 5: Solve for x
   x = 3,442,099,826.41/65,156.28
6. Step 6: Final answer
   x = 52,828.37