Finding the Fourth Proportional to 65,900.34, 99,300.20 and 54,469.62

Step by Step Solution

1. Step 1: Write the proportion equation
   65,900.34 : 99,300.20 = 54,469.62 : x
2. Step 2: Convert to fraction form
   65,900.34/99,300.20 = 54,469.62/x
3. Step 3: Cross multiply
   65,900.34x = 99,300.20 × 54,469.62
4. Step 4: Simplify right side
   65,900.34x = 5,408,843,887.58
5. Step 5: Solve for x
   x = 5,408,843,887.58/65,900.34
6. Step 6: Final answer
   x = 82,076.12