Finding the Fourth Proportional to 345,673.86, 518,510.18 and 135,164.17

Step by Step Solution

1. Step 1: Write the proportion equation
   345,673.86 : 518,510.18 = 135,164.17 : x
2. Step 2: Convert to fraction form
   345,673.86/518,510.18 = 135,164.17/x
3. Step 3: Cross multiply
   345,673.86x = 518,510.18 × 135,164.17
4. Step 4: Simplify right side
   345,673.86x = 70,083,997,440.43
5. Step 5: Solve for x
   x = 70,083,997,440.43/345,673.86
6. Step 6: Final answer
   x = 202,746.02