Finding the Fourth Proportional to 108,090, 162,135.72 and 34,218

Step by Step Solution

1. Step 1: Write the proportion equation
   108,090 : 162,135.72 = 34,218 : x
2. Step 2: Convert to fraction form
   108,090/162,135.72 = 34,218/x
3. Step 3: Cross multiply
   108,090x = 162,135.72 × 34,218
4. Step 4: Simplify right side
   108,090x = 5,547,960,066.96
5. Step 5: Solve for x
   x = 5,547,960,066.96/108,090
6. Step 6: Final answer
   x = 51,327.23