Finding the Fourth Proportional to 65,175.73, 89,956.55 and 39,690.52

Step by Step Solution

1. Step 1: Write the proportion equation
   65,175.73 : 89,956.55 = 39,690.52 : x
2. Step 2: Convert to fraction form
   65,175.73/89,956.55 = 39,690.52/x
3. Step 3: Cross multiply
   65,175.73x = 89,956.55 × 39,690.52
4. Step 4: Simplify right side
   65,175.73x = 3,570,422,246.91
5. Step 5: Solve for x
   x = 3,570,422,246.91/65,175.73
6. Step 6: Final answer
   x = 54,781.47