Finding the Fourth Proportional to 65,438.88, 90,310.32 and 37,146.42

Step by Step Solution

1. Step 1: Write the proportion equation
   65,438.88 : 90,310.32 = 37,146.42 : x
2. Step 2: Convert to fraction form
   65,438.88/90,310.32 = 37,146.42/x
3. Step 3: Cross multiply
   65,438.88x = 90,310.32 × 37,146.42
4. Step 4: Simplify right side
   65,438.88x = 3,354,705,077.05
5. Step 5: Solve for x
   x = 3,354,705,077.05/65,438.88
6. Step 6: Final answer
   x = 51,264.71