Finding the Fourth Proportional to 109,917.30, 164,881.35 and 57,429.30

Step by Step Solution

1. Step 1: Write the proportion equation
   109,917.30 : 164,881.35 = 57,429.30 : x
2. Step 2: Convert to fraction form
   109,917.30/164,881.35 = 57,429.30/x
3. Step 3: Cross multiply
   109,917.30x = 164,881.35 × 57,429.30
4. Step 4: Simplify right side
   109,917.30x = 9,469,020,513.56
5. Step 5: Solve for x
   x = 9,469,020,513.56/109,917.30
6. Step 6: Final answer
   x = 86,146.77