Finding the Fourth Proportional to 21,153,825.95, 31,730,749.42 and 13,963,679.39

Step by Step Solution

1. Step 1: Write the proportion equation
   21,153,825.95 : 31,730,749.42 = 13,963,679.39 : x
2. Step 2: Convert to fraction form
   21,153,825.95/31,730,749.42 = 13,963,679.39/x
3. Step 3: Cross multiply
   21,153,825.95x = 31,730,749.42 × 13,963,679.39
4. Step 4: Simplify right side
   21,153,825.95x = 443,078,011,511,745.50
5. Step 5: Solve for x
   x = 443,078,011,511,745.50/21,153,825.95
6. Step 6: Final answer
   x = 20,945,526.01