Finding the Fourth Proportional to 185,667.83, 278,456.94 and 85,731.95

Step by Step Solution

1. Step 1: Write the proportion equation
   185,667.83 : 278,456.94 = 85,731.95 : x
2. Step 2: Convert to fraction form
   185,667.83/278,456.94 = 85,731.95/x
3. Step 3: Cross multiply
   185,667.83x = 278,456.94 × 85,731.95
4. Step 4: Simplify right side
   185,667.83x = 23,872,657,153.38
5. Step 5: Solve for x
   x = 23,872,657,153.38/185,667.83
6. Step 6: Final answer
   x = 128,577.24