Finding the Fourth Proportional to 120,810.51, 166,801.89 and 75,508.83

Step by Step Solution

1. Step 1: Write the proportion equation
   120,810.51 : 166,801.89 = 75,508.83 : x
2. Step 2: Convert to fraction form
   120,810.51/166,801.89 = 75,508.83/x
3. Step 3: Cross multiply
   120,810.51x = 166,801.89 × 75,508.83
4. Step 4: Simplify right side
   120,810.51x = 12,595,015,555.69
5. Step 5: Solve for x
   x = 12,595,015,555.69/120,810.51
6. Step 6: Final answer
   x = 104,254.30