Finding the Fourth Proportional to 175,086.32, 262,711.50 and 86,291.42

Step by Step Solution

1. Step 1: Write the proportion equation
   175,086.32 : 262,711.50 = 86,291.42 : x
2. Step 2: Convert to fraction form
   175,086.32/262,711.50 = 86,291.42/x
3. Step 3: Cross multiply
   175,086.32x = 262,711.50 × 86,291.42
4. Step 4: Simplify right side
   175,086.32x = 22,669,747,953.87
5. Step 5: Solve for x
   x = 22,669,747,953.87/175,086.32
6. Step 6: Final answer
   x = 129,477.55