Finding the Fourth Proportional to 381,256.27, 571,888.52 and 115,019.10

Step by Step Solution

1. Step 1: Write the proportion equation
   381,256.27 : 571,888.52 = 115,019.10 : x
2. Step 2: Convert to fraction form
   381,256.27/571,888.52 = 115,019.10/x
3. Step 3: Cross multiply
   381,256.27x = 571,888.52 × 115,019.10
4. Step 4: Simplify right side
   381,256.27x = 65,778,102,870.73
5. Step 5: Solve for x
   x = 65,778,102,870.73/381,256.27
6. Step 6: Final answer
   x = 172,529.89