Finding the Fourth Proportional to 404,831.50, 607,244.52 and 134,980.30

Step by Step Solution

1. Step 1: Write the proportion equation
   404,831.50 : 607,244.52 = 134,980.30 : x
2. Step 2: Convert to fraction form
   404,831.50/607,244.52 = 134,980.30/x
3. Step 3: Cross multiply
   404,831.50x = 607,244.52 × 134,980.30
4. Step 4: Simplify right side
   404,831.50x = 81,966,047,482.96
5. Step 5: Solve for x
   x = 81,966,047,482.96/404,831.50
6. Step 6: Final answer
   x = 202,469.54