Finding the Fourth Proportional to 115,296.56, 171,798.71 and 102,719.96

Step by Step Solution

1. Step 1: Write the proportion equation
   115,296.56 : 171,798.71 = 102,719.96 : x
2. Step 2: Convert to fraction form
   115,296.56/171,798.71 = 102,719.96/x
3. Step 3: Cross multiply
   115,296.56x = 171,798.71 × 102,719.96
4. Step 4: Simplify right side
   115,296.56x = 17,647,156,619.25
5. Step 5: Solve for x
   x = 17,647,156,619.25/115,296.56
6. Step 6: Final answer
   x = 153,058.83