Finding the Fourth Proportional to 115,150,790.79, 158,907,860.91 and 65,591,145.72

Step by Step Solution

1. Step 1: Write the proportion equation
   115,150,790.79 : 158,907,860.91 = 65,591,145.72 : x
2. Step 2: Convert to fraction form
   115,150,790.79/158,907,860.91 = 65,591,145.72/x
3. Step 3: Cross multiply
   115,150,790.79x = 158,907,860.91 × 65,591,145.72
4. Step 4: Simplify right side
   115,150,790.79x = 10,422,948,661,001,302
5. Step 5: Solve for x
   x = 10,422,948,661,001,302/115,150,790.79
6. Step 6: Final answer
   x = 90,515,649.87