Finding the Fourth Proportional to 57,018.99, 78,686.01 and 31,868.49

Step by Step Solution

1. Step 1: Write the proportion equation
   57,018.99 : 78,686.01 = 31,868.49 : x
2. Step 2: Convert to fraction form
   57,018.99/78,686.01 = 31,868.49/x
3. Step 3: Cross multiply
   57,018.99x = 78,686.01 × 31,868.49
4. Step 4: Simplify right side
   57,018.99x = 2,507,604,322.82
5. Step 5: Solve for x
   x = 2,507,604,322.82/57,018.99
6. Step 6: Final answer
   x = 43,978.41