Finding the Fourth Proportional to 302,301.39, 417,002.63 and 188,927.31

Step by Step Solution

1. Step 1: Write the proportion equation
   302,301.39 : 417,002.63 = 188,927.31 : x
2. Step 2: Convert to fraction form
   302,301.39/417,002.63 = 188,927.31/x
3. Step 3: Cross multiply
   302,301.39x = 417,002.63 × 188,927.31
4. Step 4: Simplify right side
   302,301.39x = 78,783,185,148.83
5. Step 5: Solve for x
   x = 78,783,185,148.83/302,301.39
6. Step 6: Final answer
   x = 260,611.39