Finding the Fourth Proportional to 115,298.10, 172,601.55 and 101,474.10

Step by Step Solution

1. Step 1: Write the proportion equation
   115,298.10 : 172,601.55 = 101,474.10 : x
2. Step 2: Convert to fraction form
   115,298.10/172,601.55 = 101,474.10/x
3. Step 3: Cross multiply
   115,298.10x = 172,601.55 × 101,474.10
4. Step 4: Simplify right side
   115,298.10x = 17,514,586,944.86
5. Step 5: Solve for x
   x = 17,514,586,944.86/115,298.10
6. Step 6: Final answer
   x = 151,906.99