Finding the Fourth Proportional to 65,435.88, 90,306.18 and 37,143.39

Step by Step Solution

1. Step 1: Write the proportion equation
   65,435.88 : 90,306.18 = 37,143.39 : x
2. Step 2: Convert to fraction form
   65,435.88/90,306.18 = 37,143.39/x
3. Step 3: Cross multiply
   65,435.88x = 90,306.18 × 37,143.39
4. Step 4: Simplify right side
   65,435.88x = 3,354,277,663.15
5. Step 5: Solve for x
   x = 3,354,277,663.15/65,435.88
6. Step 6: Final answer
   x = 51,260.53