Finding the Fourth Proportional to 309,620.07, 427,279.23 and 171,801.50

Step by Step Solution

1. Step 1: Write the proportion equation
   309,620.07 : 427,279.23 = 171,801.50 : x
2. Step 2: Convert to fraction form
   309,620.07/427,279.23 = 171,801.50/x
3. Step 3: Cross multiply
   309,620.07x = 427,279.23 × 171,801.50
4. Step 4: Simplify right side
   309,620.07x = 73,407,210,496.45
5. Step 5: Solve for x
   x = 73,407,210,496.45/309,620.07
6. Step 6: Final answer
   x = 237,088.02