Finding the Fourth Proportional to 162,091.72, 243,161.82 and 56,892.20

Step by Step Solution

1. Step 1: Write the proportion equation
   162,091.72 : 243,161.82 = 56,892.20 : x
2. Step 2: Convert to fraction form
   162,091.72/243,161.82 = 56,892.20/x
3. Step 3: Cross multiply
   162,091.72x = 243,161.82 × 56,892.20
4. Step 4: Simplify right side
   162,091.72x = 13,834,010,895.80
5. Step 5: Solve for x
   x = 13,834,010,895.80/162,091.72
6. Step 6: Final answer
   x = 85,346.81