Finding the Fourth Proportional to 30,866,078.72, 42,589,156.29 and 18,304,807.29

Step by Step Solution

1. Step 1: Write the proportion equation
   30,866,078.72 : 42,589,156.29 = 18,304,807.29 : x
2. Step 2: Convert to fraction form
   30,866,078.72/42,589,156.29 = 18,304,807.29/x
3. Step 3: Cross multiply
   30,866,078.72x = 42,589,156.29 × 18,304,807.29
4. Step 4: Simplify right side
   30,866,078.72x = 779,586,298,532,141.25
5. Step 5: Solve for x
   x = 779,586,298,532,141.25/30,866,078.72
6. Step 6: Final answer
   x = 25,257,056.65