Finding the Fourth Proportional to 107,106.71, 147,767.69 and 64,087.20

Step by Step Solution

1. Step 1: Write the proportion equation
   107,106.71 : 147,767.69 = 64,087.20 : x
2. Step 2: Convert to fraction form
   107,106.71/147,767.69 = 64,087.20/x
3. Step 3: Cross multiply
   107,106.71x = 147,767.69 × 64,087.20
4. Step 4: Simplify right side
   107,106.71x = 9,470,017,662.79
5. Step 5: Solve for x
   x = 9,470,017,662.79/107,106.71
6. Step 6: Final answer
   x = 88,416.67