Finding the Fourth Proportional to 166,892.78, 250,264.31 and 99,456.63

Step by Step Solution

1. Step 1: Write the proportion equation
   166,892.78 : 250,264.31 = 99,456.63 : x
2. Step 2: Convert to fraction form
   166,892.78/250,264.31 = 99,456.63/x
3. Step 3: Cross multiply
   166,892.78x = 250,264.31 × 99,456.63
4. Step 4: Simplify right side
   166,892.78x = 24,890,444,384.59
5. Step 5: Solve for x
   x = 24,890,444,384.59/166,892.78
6. Step 6: Final answer
   x = 149,140.34