Finding the Fourth Proportional to 70,928,914.82, 106,158,947.61 and 64,555,165.76

Step by Step Solution

1. Step 1: Write the proportion equation
   70,928,914.82 : 106,158,947.61 = 64,555,165.76 : x
2. Step 2: Convert to fraction form
   70,928,914.82/106,158,947.61 = 64,555,165.76/x
3. Step 3: Cross multiply
   70,928,914.82x = 106,158,947.61 × 64,555,165.76
4. Step 4: Simplify right side
   70,928,914.82x = 6,853,108,459,870,706
5. Step 5: Solve for x
   x = 6,853,108,459,870,706/70,928,914.82
6. Step 6: Final answer
   x = 96,619,389.67