Finding the Fourth Proportional to 162,561.42, 243,791.52 and 57,355.74

Step by Step Solution

1. Step 1: Write the proportion equation
   162,561.42 : 243,791.52 = 57,355.74 : x
2. Step 2: Convert to fraction form
   162,561.42/243,791.52 = 57,355.74/x
3. Step 3: Cross multiply
   162,561.42x = 243,791.52 × 57,355.74
4. Step 4: Simplify right side
   162,561.42x = 13,982,843,035.32
5. Step 5: Solve for x
   x = 13,982,843,035.32/162,561.42
6. Step 6: Final answer
   x = 86,015.75