Finding the Fourth Proportional to 65,314.88, 90,225.52 and 62,887.36

Step by Step Solution

1. Step 1: Write the proportion equation
   65,314.88 : 90,225.52 = 62,887.36 : x
2. Step 2: Convert to fraction form
   65,314.88/90,225.52 = 62,887.36/x
3. Step 3: Cross multiply
   65,314.88x = 90,225.52 × 62,887.36
4. Step 4: Simplify right side
   65,314.88x = 5,674,044,757.43
5. Step 5: Solve for x
   x = 5,674,044,757.43/65,314.88
6. Step 6: Final answer
   x = 86,872.16