Finding the Fourth Proportional to 65,709,096.62, 90,689,931.59 and 39,603,644.28

Step by Step Solution

1. Step 1: Write the proportion equation
   65,709,096.62 : 90,689,931.59 = 39,603,644.28 : x
2. Step 2: Convert to fraction form
   65,709,096.62/90,689,931.59 = 39,603,644.28/x
3. Step 3: Cross multiply
   65,709,096.62x = 90,689,931.59 × 39,603,644.28
4. Step 4: Simplify right side
   65,709,096.62x = 3,591,651,790,269,876.50
5. Step 5: Solve for x
   x = 3,591,651,790,269,876.50/65,709,096.62
6. Step 6: Final answer
   x = 54,659,886.92