Finding the Fourth Proportional to 65,513.85, 90,408.69 and 37,219.56

Step by Step Solution

1. Step 1: Write the proportion equation
   65,513.85 : 90,408.69 = 37,219.56 : x
2. Step 2: Convert to fraction form
   65,513.85/90,408.69 = 37,219.56/x
3. Step 3: Cross multiply
   65,513.85x = 90,408.69 × 37,219.56
4. Step 4: Simplify right side
   65,513.85x = 3,364,971,661.98
5. Step 5: Solve for x
   x = 3,364,971,661.98/65,513.85
6. Step 6: Final answer
   x = 51,362.75