Finding the Fourth Proportional to 309,123.06, 426,585.06 and 173,161.86

Step by Step Solution

1. Step 1: Write the proportion equation
   309,123.06 : 426,585.06 = 173,161.86 : x
2. Step 2: Convert to fraction form
   309,123.06/426,585.06 = 173,161.86/x
3. Step 3: Cross multiply
   309,123.06x = 426,585.06 × 173,161.86
4. Step 4: Simplify right side
   309,123.06x = 73,868,262,437.81
5. Step 5: Solve for x
   x = 73,868,262,437.81/309,123.06
6. Step 6: Final answer
   x = 238,960.70