Finding the Fourth Proportional to 65,679.49, 90,642.31 and 37,385.18

Step by Step Solution

1. Step 1: Write the proportion equation
   65,679.49 : 90,642.31 = 37,385.18 : x
2. Step 2: Convert to fraction form
   65,679.49/90,642.31 = 37,385.18/x
3. Step 3: Cross multiply
   65,679.49x = 90,642.31 × 37,385.18
4. Step 4: Simplify right side
   65,679.49x = 3,388,678,868.20
5. Step 5: Solve for x
   x = 3,388,678,868.20/65,679.49
6. Step 6: Final answer
   x = 51,594.17