Finding the Fourth Proportional to 65,310.42, 90,147 and 38,468.40

Step by Step Solution

1. Step 1: Write the proportion equation
   65,310.42 : 90,147 = 38,468.40 : x
2. Step 2: Convert to fraction form
   65,310.42/90,147 = 38,468.40/x
3. Step 3: Cross multiply
   65,310.42x = 90,147 × 38,468.40
4. Step 4: Simplify right side
   65,310.42x = 3,467,810,854.80
5. Step 5: Solve for x
   x = 3,467,810,854.80/65,310.42
6. Step 6: Final answer
   x = 53,097.36