Finding the Fourth Proportional to 65,478.12, 90,359.82 and 37,188.12

Step by Step Solution

1. Step 1: Write the proportion equation
   65,478.12 : 90,359.82 = 37,188.12 : x
2. Step 2: Convert to fraction form
   65,478.12/90,359.82 = 37,188.12/x
3. Step 3: Cross multiply
   65,478.12x = 90,359.82 × 37,188.12
4. Step 4: Simplify right side
   65,478.12x = 3,360,311,829.34
5. Step 5: Solve for x
   x = 3,360,311,829.34/65,478.12
6. Step 6: Final answer
   x = 51,319.61