Finding the Fourth Proportional to 42,542,356.01, 63,815,796.95 and 13,398,474.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,542,356.01 : 63,815,796.95 = 13,398,474.20 : x
2. Step 2: Convert to fraction form
   42,542,356.01/63,815,796.95 = 13,398,474.20/x
3. Step 3: Cross multiply
   42,542,356.01x = 63,815,796.95 × 13,398,474.20
4. Step 4: Simplify right side
   42,542,356.01x = 855,034,308,600,942.38
5. Step 5: Solve for x
   x = 855,034,308,600,942.38/42,542,356.01
6. Step 6: Final answer
   x = 20,098,423.99