Finding the Fourth Proportional to 65,620.47, 90,564.90 and 37,320.69

Step by Step Solution

1. Step 1: Write the proportion equation
   65,620.47 : 90,564.90 = 37,320.69 : x
2. Step 2: Convert to fraction form
   65,620.47/90,564.90 = 37,320.69/x
3. Step 3: Cross multiply
   65,620.47x = 90,564.90 × 37,320.69
4. Step 4: Simplify right side
   65,620.47x = 3,379,944,557.78
5. Step 5: Solve for x
   x = 3,379,944,557.78/65,620.47
6. Step 6: Final answer
   x = 51,507.47