Finding the Fourth Proportional to 57,404,577.21, 86,147,216.04 and 51,916,120.28

Step by Step Solution

1. Step 1: Write the proportion equation
   57,404,577.21 : 86,147,216.04 = 51,916,120.28 : x
2. Step 2: Convert to fraction form
   57,404,577.21/86,147,216.04 = 51,916,120.28/x
3. Step 3: Cross multiply
   57,404,577.21x = 86,147,216.04 × 51,916,120.28
4. Step 4: Simplify right side
   57,404,577.21x = 4,472,429,229,289,049.50
5. Step 5: Solve for x
   x = 4,472,429,229,289,049.50/57,404,577.21
6. Step 6: Final answer
   x = 77,910,672.75