Finding the Fourth Proportional to 107,019.96, 147,688.63 and 64,570.29

Step by Step Solution

1. Step 1: Write the proportion equation
   107,019.96 : 147,688.63 = 64,570.29 : x
2. Step 2: Convert to fraction form
   107,019.96/147,688.63 = 64,570.29/x
3. Step 3: Cross multiply
   107,019.96x = 147,688.63 × 64,570.29
4. Step 4: Simplify right side
   107,019.96x = 9,536,297,459.72
5. Step 5: Solve for x
   x = 9,536,297,459.72/107,019.96
6. Step 6: Final answer
   x = 89,107.65