Finding the Fourth Proportional to 149,562.72, 206,414.28 and 85,041.72

Step by Step Solution

1. Step 1: Write the proportion equation
   149,562.72 : 206,414.28 = 85,041.72 : x
2. Step 2: Convert to fraction form
   149,562.72/206,414.28 = 85,041.72/x
3. Step 3: Cross multiply
   149,562.72x = 206,414.28 × 85,041.72
4. Step 4: Simplify right side
   149,562.72x = 17,553,825,403.76
5. Step 5: Solve for x
   x = 17,553,825,403.76/149,562.72
6. Step 6: Final answer
   x = 117,367.65