Finding the Fourth Proportional to 115,897,815.63, 159,940,258.56 and 63,686,864.79

Step by Step Solution

1. Step 1: Write the proportion equation
   115,897,815.63 : 159,940,258.56 = 63,686,864.79 : x
2. Step 2: Convert to fraction form
   115,897,815.63/159,940,258.56 = 63,686,864.79/x
3. Step 3: Cross multiply
   115,897,815.63x = 159,940,258.56 × 63,686,864.79
4. Step 4: Simplify right side
   115,897,815.63x = 10,186,093,621,388,360
5. Step 5: Solve for x
   x = 10,186,093,621,388,360/115,897,815.63
6. Step 6: Final answer
   x = 87,888,572.93