Finding the Fourth Proportional to 50,566.12, 69,768.80 and 30,915.65

Step by Step Solution

1. Step 1: Write the proportion equation
   50,566.12 : 69,768.80 = 30,915.65 : x
2. Step 2: Convert to fraction form
   50,566.12/69,768.80 = 30,915.65/x
3. Step 3: Cross multiply
   50,566.12x = 69,768.80 × 30,915.65
4. Step 4: Simplify right side
   50,566.12x = 2,156,947,801.72
5. Step 5: Solve for x
   x = 2,156,947,801.72/50,566.12
6. Step 6: Final answer
   x = 42,655.99