Finding the Fourth Proportional to 65,316.72, 90,137.64 and 37,017.12

Step by Step Solution

1. Step 1: Write the proportion equation
   65,316.72 : 90,137.64 = 37,017.12 : x
2. Step 2: Convert to fraction form
   65,316.72/90,137.64 = 37,017.12/x
3. Step 3: Cross multiply
   65,316.72x = 90,137.64 × 37,017.12
4. Step 4: Simplify right side
   65,316.72x = 3,336,635,836.40
5. Step 5: Solve for x
   x = 3,336,635,836.40/65,316.72
6. Step 6: Final answer
   x = 51,083.95