Finding the Fourth Proportional to 116,209.30, 174,429.15 and 57,111.70

Step by Step Solution

1. Step 1: Write the proportion equation
   116,209.30 : 174,429.15 = 57,111.70 : x
2. Step 2: Convert to fraction form
   116,209.30/174,429.15 = 57,111.70/x
3. Step 3: Cross multiply
   116,209.30x = 174,429.15 × 57,111.70
4. Step 4: Simplify right side
   116,209.30x = 9,961,945,286.06
5. Step 5: Solve for x
   x = 9,961,945,286.06/116,209.30
6. Step 6: Final answer
   x = 85,724.17