Finding the Fourth Proportional to 65,887.48, 90,887.83 and 39,003.79

Step by Step Solution

1. Step 1: Write the proportion equation
   65,887.48 : 90,887.83 = 39,003.79 : x
2. Step 2: Convert to fraction form
   65,887.48/90,887.83 = 39,003.79/x
3. Step 3: Cross multiply
   65,887.48x = 90,887.83 × 39,003.79
4. Step 4: Simplify right side
   65,887.48x = 3,544,969,834.88
5. Step 5: Solve for x
   x = 3,544,969,834.88/65,887.48
6. Step 6: Final answer
   x = 53,803.39