Finding the Fourth Proportional to 65,931.76, 90,985.60 and 35,717.05

Step by Step Solution

1. Step 1: Write the proportion equation
   65,931.76 : 90,985.60 = 35,717.05 : x
2. Step 2: Convert to fraction form
   65,931.76/90,985.60 = 35,717.05/x
3. Step 3: Cross multiply
   65,931.76x = 90,985.60 × 35,717.05
4. Step 4: Simplify right side
   65,931.76x = 3,249,737,181.95
5. Step 5: Solve for x
   x = 3,249,737,181.95/65,931.76
6. Step 6: Final answer
   x = 49,289.41