Finding the Fourth Proportional to 65,337.80, 90,081.50 and 42,326.68

Step by Step Solution

1. Step 1: Write the proportion equation
   65,337.80 : 90,081.50 = 42,326.68 : x
2. Step 2: Convert to fraction form
   65,337.80/90,081.50 = 42,326.68/x
3. Step 3: Cross multiply
   65,337.80x = 90,081.50 × 42,326.68
4. Step 4: Simplify right side
   65,337.80x = 3,812,850,824.42
5. Step 5: Solve for x
   x = 3,812,850,824.42/65,337.80
6. Step 6: Final answer
   x = 58,355.97