Finding the Fourth Proportional to 165,507.72, 228,401.82 and 90,057.84

Step by Step Solution

1. Step 1: Write the proportion equation
   165,507.72 : 228,401.82 = 90,057.84 : x
2. Step 2: Convert to fraction form
   165,507.72/228,401.82 = 90,057.84/x
3. Step 3: Cross multiply
   165,507.72x = 228,401.82 × 90,057.84
4. Step 4: Simplify right side
   165,507.72x = 20,569,374,561.27
5. Step 5: Solve for x
   x = 20,569,374,561.27/165,507.72
6. Step 6: Final answer
   x = 124,280.45