Finding the Fourth Proportional to 123,921.30, 171,011.82 and 70,216.26

Step by Step Solution

1. Step 1: Write the proportion equation
   123,921.30 : 171,011.82 = 70,216.26 : x
2. Step 2: Convert to fraction form
   123,921.30/171,011.82 = 70,216.26/x
3. Step 3: Cross multiply
   123,921.30x = 171,011.82 × 70,216.26
4. Step 4: Simplify right side
   123,921.30x = 12,007,810,416.19
5. Step 5: Solve for x
   x = 12,007,810,416.19/123,921.30
6. Step 6: Final answer
   x = 96,898.68