Finding the Fourth Proportional to 120,384.86, 166,075.99 and 77,957.06

Step by Step Solution

1. Step 1: Write the proportion equation
   120,384.86 : 166,075.99 = 77,957.06 : x
2. Step 2: Convert to fraction form
   120,384.86/166,075.99 = 77,957.06/x
3. Step 3: Cross multiply
   120,384.86x = 166,075.99 × 77,957.06
4. Step 4: Simplify right side
   120,384.86x = 12,946,794,891.72
5. Step 5: Solve for x
   x = 12,946,794,891.72/120,384.86
6. Step 6: Final answer
   x = 107,545.05