Finding the Fourth Proportional to 120,411.94, 166,248.84 and 75,108.10

Step by Step Solution

1. Step 1: Write the proportion equation
   120,411.94 : 166,248.84 = 75,108.10 : x
2. Step 2: Convert to fraction form
   120,411.94/166,248.84 = 75,108.10/x
3. Step 3: Cross multiply
   120,411.94x = 166,248.84 × 75,108.10
4. Step 4: Simplify right side
   120,411.94x = 12,486,634,499.60
5. Step 5: Solve for x
   x = 12,486,634,499.60/120,411.94
6. Step 6: Final answer
   x = 103,699.31