Finding the Fourth Proportional to 65,449.60, 90,320.88 and 37,155.76

Step by Step Solution

1. Step 1: Write the proportion equation
   65,449.60 : 90,320.88 = 37,155.76 : x
2. Step 2: Convert to fraction form
   65,449.60/90,320.88 = 37,155.76/x
3. Step 3: Cross multiply
   65,449.60x = 90,320.88 × 37,155.76
4. Step 4: Simplify right side
   65,449.60x = 3,355,940,940.27
5. Step 5: Solve for x
   x = 3,355,940,940.27/65,449.60
6. Step 6: Final answer
   x = 51,275.19