Finding the Fourth Proportional to 150,769.15, 208,061.71 and 87,107.00

Step by Step Solution

1. Step 1: Write the proportion equation
   150,769.15 : 208,061.71 = 87,107.00 : x
2. Step 2: Convert to fraction form
   150,769.15/208,061.71 = 87,107.00/x
3. Step 3: Cross multiply
   150,769.15x = 208,061.71 × 87,107.00
4. Step 4: Simplify right side
   150,769.15x = 18,123,630,604.87
5. Step 5: Solve for x
   x = 18,123,630,604.87/150,769.15
6. Step 6: Final answer
   x = 120,207.82