Finding the Fourth Proportional to 123,432.78, 185,000.24 and 56,781.48

Step by Step Solution

1. Step 1: Write the proportion equation
   123,432.78 : 185,000.24 = 56,781.48 : x
2. Step 2: Convert to fraction form
   123,432.78/185,000.24 = 56,781.48/x
3. Step 3: Cross multiply
   123,432.78x = 185,000.24 × 56,781.48
4. Step 4: Simplify right side
   123,432.78x = 10,504,587,427.56
5. Step 5: Solve for x
   x = 10,504,587,427.56/123,432.78
6. Step 6: Final answer
   x = 85,103.71