Finding the Fourth Proportional to 123,076.55, 184,503.45 and 85,654.55

Step by Step Solution

1. Step 1: Write the proportion equation
   123,076.55 : 184,503.45 = 85,654.55 : x
2. Step 2: Convert to fraction form
   123,076.55/184,503.45 = 85,654.55/x
3. Step 3: Cross multiply
   123,076.55x = 184,503.45 × 85,654.55
4. Step 4: Simplify right side
   123,076.55x = 15,803,559,983.20
5. Step 5: Solve for x
   x = 15,803,559,983.20/123,076.55
6. Step 6: Final answer
   x = 128,404.31