Finding the Fourth Proportional to 65,490.30, 90,410.67 and 50,922.18

Step by Step Solution

1. Step 1: Write the proportion equation
   65,490.30 : 90,410.67 = 50,922.18 : x
2. Step 2: Convert to fraction form
   65,490.30/90,410.67 = 50,922.18/x
3. Step 3: Cross multiply
   65,490.30x = 90,410.67 × 50,922.18
4. Step 4: Simplify right side
   65,490.30x = 4,603,908,411.66
5. Step 5: Solve for x
   x = 4,603,908,411.66/65,490.30
6. Step 6: Final answer
   x = 70,299.09