Finding the Fourth Proportional to 115,586,856.18, 159,517,027.89 and 64,078,632.18

Step by Step Solution

1. Step 1: Write the proportion equation
   115,586,856.18 : 159,517,027.89 = 64,078,632.18 : x
2. Step 2: Convert to fraction form
   115,586,856.18/159,517,027.89 = 64,078,632.18/x
3. Step 3: Cross multiply
   115,586,856.18x = 159,517,027.89 × 64,078,632.18
4. Step 4: Simplify right side
   115,586,856.18x = 10,221,632,956,610,110
5. Step 5: Solve for x
   x = 10,221,632,956,610,110/115,586,856.18
6. Step 6: Final answer
   x = 88,432,485.27