Finding the Fourth Proportional to 65,575.98, 90,505.35 and 37,290.78

Step by Step Solution

1. Step 1: Write the proportion equation
   65,575.98 : 90,505.35 = 37,290.78 : x
2. Step 2: Convert to fraction form
   65,575.98/90,505.35 = 37,290.78/x
3. Step 3: Cross multiply
   65,575.98x = 90,505.35 × 37,290.78
4. Step 4: Simplify right side
   65,575.98x = 3,375,015,095.67
5. Step 5: Solve for x
   x = 3,375,015,095.67/65,575.98
6. Step 6: Final answer
   x = 51,467.25