Finding the Fourth Proportional to 65,524.34, 90,331.98 and 55,412.12

Step by Step Solution

1. Step 1: Write the proportion equation
   65,524.34 : 90,331.98 = 55,412.12 : x
2. Step 2: Convert to fraction form
   65,524.34/90,331.98 = 55,412.12/x
3. Step 3: Cross multiply
   65,524.34x = 90,331.98 × 55,412.12
4. Step 4: Simplify right side
   65,524.34x = 5,005,486,515.60
5. Step 5: Solve for x
   x = 5,005,486,515.60/65,524.34
6. Step 6: Final answer
   x = 76,391.25