Finding the Fourth Proportional to 65,682.31, 90,641.70 and 37,388

Step by Step Solution

1. Step 1: Write the proportion equation
   65,682.31 : 90,641.70 = 37,388 : x
2. Step 2: Convert to fraction form
   65,682.31/90,641.70 = 37,388/x
3. Step 3: Cross multiply
   65,682.31x = 90,641.70 × 37,388
4. Step 4: Simplify right side
   65,682.31x = 3,388,911,879.60
5. Step 5: Solve for x
   x = 3,388,911,879.60/65,682.31
6. Step 6: Final answer
   x = 51,595.50