Finding the Fourth Proportional to 65,491.30, 90,412.05 and 50,923.18

Step by Step Solution

1. Step 1: Write the proportion equation
   65,491.30 : 90,412.05 = 50,923.18 : x
2. Step 2: Convert to fraction form
   65,491.30/90,412.05 = 50,923.18/x
3. Step 3: Cross multiply
   65,491.30x = 90,412.05 × 50,923.18
4. Step 4: Simplify right side
   65,491.30x = 4,604,069,096.32
5. Step 5: Solve for x
   x = 4,604,069,096.32/65,491.30
6. Step 6: Final answer
   x = 70,300.47