Finding the Fourth Proportional to 404,740.50, 607,140.72 and 155,422.50

Step by Step Solution

1. Step 1: Write the proportion equation
   404,740.50 : 607,140.72 = 155,422.50 : x
2. Step 2: Convert to fraction form
   404,740.50/607,140.72 = 155,422.50/x
3. Step 3: Cross multiply
   404,740.50x = 607,140.72 × 155,422.50
4. Step 4: Simplify right side
   404,740.50x = 94,363,328,554.20
5. Step 5: Solve for x
   x = 94,363,328,554.20/404,740.50
6. Step 6: Final answer
   x = 233,145.26