Finding the Fourth Proportional to 55,915.50, 77,165.01 and 30,765

Step by Step Solution

1. Step 1: Write the proportion equation
   55,915.50 : 77,165.01 = 30,765 : x
2. Step 2: Convert to fraction form
   55,915.50/77,165.01 = 30,765/x
3. Step 3: Cross multiply
   55,915.50x = 77,165.01 × 30,765
4. Step 4: Simplify right side
   55,915.50x = 2,373,981,532.65
5. Step 5: Solve for x
   x = 2,373,981,532.65/55,915.50
6. Step 6: Final answer
   x = 42,456.59