Finding the Fourth Proportional to 115,435,523.80, 159,303,601.50 and 65,874,910.78

Step by Step Solution

1. Step 1: Write the proportion equation
   115,435,523.80 : 159,303,601.50 = 65,874,910.78 : x
2. Step 2: Convert to fraction form
   115,435,523.80/159,303,601.50 = 65,874,910.78/x
3. Step 3: Cross multiply
   115,435,523.80x = 159,303,601.50 × 65,874,910.78
4. Step 4: Simplify right side
   115,435,523.80x = 10,494,110,535,745,174
5. Step 5: Solve for x
   x = 10,494,110,535,745,174/115,435,523.80
6. Step 6: Final answer
   x = 90,908,848.42