Finding the Fourth Proportional to 65,236, 90,025.74 and 35,428

Step by Step Solution

1. Step 1: Write the proportion equation
   65,236 : 90,025.74 = 35,428 : x
2. Step 2: Convert to fraction form
   65,236/90,025.74 = 35,428/x
3. Step 3: Cross multiply
   65,236x = 90,025.74 × 35,428
4. Step 4: Simplify right side
   65,236x = 3,189,431,916.72
5. Step 5: Solve for x
   x = 3,189,431,916.72/65,236
6. Step 6: Final answer
   x = 48,890.67