Finding the Fourth Proportional to 109,399.43, 164,099.07 and 84,475.86

Step by Step Solution

1. Step 1: Write the proportion equation
   109,399.43 : 164,099.07 = 84,475.86 : x
2. Step 2: Convert to fraction form
   109,399.43/164,099.07 = 84,475.86/x
3. Step 3: Cross multiply
   109,399.43x = 164,099.07 × 84,475.86
4. Step 4: Simplify right side
   109,399.43x = 13,862,410,063.45
5. Step 5: Solve for x
   x = 13,862,410,063.45/109,399.43
6. Step 6: Final answer
   x = 126,713.74